remove all links to old jenkins from documentation
old jenkins just went behind VPN; quick qrep show
wlodek@wlodek-mac-p:kea (1941) $ grep -rn "jenkins.isc.org" .
./prem/src/hooks/dhcp/class_cmds/class_cmds.dox:16:understood <a href="https://jenkins.isc.org/job/Kea_doc/doxygen/">Kea
./prem/src/hooks/dhcp/class_cmds/class_cmds.dox:18:href="https://jenkins.isc.org/job/Kea_doc/doxygen/df/d46/hooksdgDevelopersGuide.html">
./prem/src/hooks/dhcp/forensic_log/libdhcp_legal_log.dox:16:understood <a href="https://jenkins.isc.org/job/Kea_doc/doxygen/">Kea
./prem/src/hooks/dhcp/forensic_log/libdhcp_legal_log.dox:18:href="https://jenkins.isc.org/job/Kea_doc/doxygen/df/d46/hooksdgDevelopersGuide.html">
./prem/src/hooks/dhcp/forensic_log/libdhcp_legal_log.dox:323:href="https://jenkins.isc.org/job/Kea_doc/doxygen/df/d46/hooksdgDevelopersGuide.html#hooksdgTutorial">
./prem/src/hooks/dhcp/radius/radius.dox:16:understood <a href="https://jenkins.isc.org/job/Kea_doc/doxygen/">Kea
./prem/src/hooks/dhcp/radius/radius.dox:18:href="https://jenkins.isc.org/job/Kea_doc/doxygen/df/d46/hooksdgDevelopersGuide.html">
./prem/src/hooks/dhcp/host_cmds/host_cmds.dox:16:understood <a href="https://jenkins.isc.org/job/Kea_doc/doxygen/">Kea
./prem/src/hooks/dhcp/host_cmds/host_cmds.dox:18:href="https://jenkins.isc.org/job/Kea_doc/doxygen/df/d46/hooksdgDevelopersGuide.html">
./prem/src/hooks/dhcp/flex_id/libdhcp_flex_id.dox:16:understood <a href="https://jenkins.isc.org/job/Kea_doc/doxygen/">Kea
./prem/src/hooks/dhcp/flex_id/libdhcp_flex_id.dox:18:href="https://jenkins.isc.org/job/Kea_doc/doxygen/df/d46/hooksdgDevelopersGuide.html">
./prem/src/hooks/dhcp/host_cache/host_cache.dox:16:understood <a href="https://jenkins.isc.org/job/Kea_doc/doxygen/">Kea
./prem/src/hooks/dhcp/host_cache/host_cache.dox:18:href="https://jenkins.isc.org/job/Kea_doc/doxygen/df/d46/hooksdgDevelopersGuide.html">
./prem/src/hooks/dhcp/cb_cmds/cb_cmds.dox:16:understood <a href="https://jenkins.isc.org/job/Kea_doc/doxygen/">Kea
./prem/src/hooks/dhcp/cb_cmds/cb_cmds.dox:18:href="https://jenkins.isc.org/job/Kea_doc/doxygen/df/d46/hooksdgDevelopersGuide.html">
./prem/src/hooks/dhcp/subnet_cmds/subnet_cmds.dox:16:understood <a href="https://jenkins.isc.org/job/Kea_doc/doxygen/">Kea
./prem/src/hooks/dhcp/subnet_cmds/subnet_cmds.dox:18:href="https://jenkins.isc.org/job/Kea_doc/doxygen/df/d46/hooksdgDevelopersGuide.html">
./prem/src/hooks/dhcp/lease_query/lease_query.dox:16:understood <a href="https://jenkins.isc.org/job/Kea_doc/doxygen/">Kea
./prem/src/hooks/dhcp/lease_query/lease_query.dox:18:href="https://jenkins.isc.org/job/Kea_doc/doxygen/df/d46/hooksdgDevelopersGuide.html">
./prem/src/hooks/d2/gss_tsig/gss_tsig.dox:16:understood <a href="https://jenkins.isc.org/job/Kea_doc/doxygen/">Kea
./prem/src/hooks/d2/gss_tsig/gss_tsig.dox:18:href="https://jenkins.isc.org/job/Kea_doc/doxygen/df/d46/hooksdgDevelopersGuide.html">
./.gitlab/issue_templates/release_checklist.md:18:1. [ ] Check [Performance Test Results](https://jenkins.isc.org/job/kea-dev/job/performance/KeaPerformanceReport/) in Jenkins for drops in performance.
./kea-1.9.9-git/CONTRIBUTING.md:43:take a look at the [Jenkins build farm](https://jenkins.isc.org/).
./kea-1.9.9-git/src/hooks/dhcp/stat_cmds/stat_cmds.dox:19:href="https://jenkins.isc.org/job/Kea_doc/doxygen/">Kea Developer's Guide</a> and in
./kea-1.9.9-git/src/hooks/dhcp/lease_cmds/lease_cmds.dox:19:href="https://jenkins.isc.org/job/Kea_doc/doxygen/">Kea Developer's Guide</a> and in
./kea-1.9.9-git/src/hooks/dhcp/flex_option/flex_option.dox:19:the <a href="https://jenkins.isc.org/job/Kea_doc/doxygen/">Kea
./kea-1.9.9-git/src/hooks/dhcp/bootp/bootp.dox:19:the <a href="https://jenkins.isc.org/job/Kea_doc/doxygen/">Kea
./kea-1.9.9-git/src/hooks/dhcp/run_script/run_script.dox:19:the <a href="https://jenkins.isc.org/job/Kea_doc/doxygen/">Kea
./CONTRIBUTING.md:97:take a look at the [Jenkins build farm](https://jenkins.isc.org/).
./doc/sphinx/man/kea-ctrl-agent.8.rst:72:version is available at https://jenkins.isc.org/job/Kea_doc/doxygen/.
./doc/sphinx/man/keactrl.8.rst:104:version is available at https://jenkins.isc.org/job/Kea_doc/doxygen/.
./doc/sphinx/man/kea-dhcp-ddns.8.rst:67:version is available at https://jenkins.isc.org/job/Kea_doc/doxygen/.
./doc/sphinx/man/kea-admin.8.rst:116:version is available at https://jenkins.isc.org/job/Kea_doc/doxygen/.
./doc/sphinx/man/kea-dhcp4.8.rst:73:version is available at https://jenkins.isc.org/job/Kea_doc/doxygen/.
./doc/sphinx/man/kea-dhcp6.8.rst:73:version is available at https://jenkins.isc.org/job/Kea_doc/doxygen/.
./doc/sphinx/man/kea-shell.8.rst:102:version is available at https://jenkins.isc.org/job/Kea_doc/doxygen/.
./doc/sphinx/man/kea-lfc.8.rst:104:version is available at https://jenkins.isc.org/job/Kea_doc/doxygen/.
./doc/sphinx/man/kea-netconf.8.rst:65:version is available at https://jenkins.isc.org/job/Kea_doc/doxygen/.
./doc/sphinx/arm/agent.rst:27:Guide <https://jenkins.isc.org/job/Kea_doc/doxygen/>`__.
./doc/sphinx/arm/install.rst:180:Guide <https://jenkins.isc.org/job/Kea_doc/doxygen/>`__ contains more
./doc/sphinx/arm/install.rst:414:<https://jenkins.isc.org/job/Kea_doc/doxygen/de/d9a/crossCompile.html>`__.
./doc/sphinx/arm/install.rst:437: Guide <https://jenkins.isc.org/job/Kea_doc/doxygen/>`__.
./doc/sphinx/arm/dhcp6-srv.rst:3479:`here <https://jenkins.isc.org/job/kea-dev/job/performance/KeaPerformanceReport/>`_.
./doc/sphinx/arm/dhcp6-srv.rst:6548:<https://jenkins.isc.org/job/Kea_doc/doxygen/d2/d96/ctrlSocket.html>`__
./doc/sphinx/arm/hooks.rst:48:Guide <https://jenkins.isc.org/job/Kea_doc/doxygen/df/d46/hooksdgDevelopersGuide.html>`__.
./doc/sphinx/arm/hooks.rst:241:<https://jenkins.isc.org/job/Kea_doc/doxygen/df/d46/hooksdgDevelopersGuide.html>`__.
./doc/sphinx/arm/hooks.rst:554:<https://jenkins.isc.org/job/Kea_doc/doxygen/d8/db2/libdhcp_user_chk.html>`__
./doc/sphinx/arm/hooks.rst:557:<https://jenkins.isc.org/job/Kea_doc/doxygen/index.html#hooksFramework>`__ should give users
./doc/sphinx/arm/ddns.rst:285:Guide <https://jenkins.isc.org/job/Kea_doc/doxygen/d2/d96/ctrlSocket.html>`__
./doc/sphinx/arm/ctrl-channel.rst:229:`Using Control Channel <https://jenkins.isc.org/job/Kea_doc/doxygen/d2/d96/ctrlSocket.html#ctrlSocketClient>`__
./doc/sphinx/arm/dhcp4-srv.rst:3995:`here <https://jenkins.isc.org/job/kea-dev/job/performance/KeaPerformanceReport/>`_.
./doc/sphinx/arm/dhcp4-srv.rst:6587:<https://jenkins.isc.org/job/Kea_doc/doxygen/d2/d96/ctrlSocket.html>`__
./doc/sphinx/arm/congestion-handling.rst:74:`Kea Developer's Guide <https://jenkins.isc.org/job/Kea_doc/doxygen/index.html>`__.)
./src/hooks/dhcp/stat_cmds/stat_cmds.dox:19:href="https://jenkins.isc.org/job/Kea_doc/doxygen/">Kea Developer's Guide</a> and in
./src/hooks/dhcp/lease_cmds/lease_cmds.dox:19:href="https://jenkins.isc.org/job/Kea_doc/doxygen/">Kea Developer's Guide</a> and in
./src/hooks/dhcp/flex_option/flex_option.dox:19:the <a href="https://jenkins.isc.org/job/Kea_doc/doxygen/">Kea
./src/hooks/dhcp/bootp/bootp.dox:19:the <a href="https://jenkins.isc.org/job/Kea_doc/doxygen/">Kea
./src/hooks/dhcp/run_script/run_script.dox:19:the <a href="https://jenkins.isc.org/job/Kea_doc/doxygen/">Kea