Sanity Checks for 1.7.0 rc2

Please verify the packages and files according to https://wiki.isc.org/bin/view/QA/KeaReleaseProcess, "Sanity checks proposals" section and your imagination.

!!!!!!! Before starting any checks. please, state in Sanity Checks issue in GitLab #925 (closed) what check you are doing in a thread/discussion (not as comment). When you finish given check state in the same thread/discussion what is the result. This way we know what is covered upfront and we can avoid repeating ourselves. !!!!!!!

Release content is located on:

1. [tarballs] repo.isc.org in the following folders:

   /data/shared/sweng/kea/releases/1.7.0-rc2
   /data/shared/sweng/kea/releases/premium-1.7.0-rc2
   /data/shared/sweng/kea/releases/subscription-1.7.0-rc2

On Jenkins: https://jenkins.isc.org/job/kea-1.7/job/tarball-internal/16/

SHA256 (1.7.0-rc2/kea-1.7.0.tar.gz) = 173c8e893690a611bc1d1c6fbe54a5c20fcd54429399a8dc3a0d7d2eb01bf8cc
SHA256 (subscription-1.7.0-rc2/kea-subscription-1.7.0.tar.gz) = 8ee1afbc448d3ccfdaba73b9ee8babf11382d3b5102d2e8af3902f6cfbb7a199
SHA256 (premium-1.7.0-rc2/kea-premium-1.7.0.tar.gz) = bda1fee941a1bd1ff8eb1f88914c0049c10aab2fc9d6a2dc76290a4f8536020f
SHA256 (1.7.0-rc2/doc/html) = a732695601bde089237084a2ac31d97c30e13de0b5d010a70708b0c126ae07a1
SHA256 (1.7.0-rc2/doc/kea-arm.pdf) = 064730d3ceb77de27adfcae54640e00ae2880a87f32f0f0136b18e7a8569c46e
SHA256 (1.7.0-rc2/doc/kea-messages.pdf) = cc3ae935df0870b3605a9c73feb611dafd170dc3aa3ebe33446ba1984fa4d502

2. [rpm/deb packages] on packages.isc.org, exact packages versions are stored here: https://jenkins.isc.org/job/kea-1.7/job/pkg/22/, release version is 1.7.0-isc0001620190925021130 (please verify if it is this version while installing)

Previous Sanity Check issue for rc1: #922 (closed)