Fix TSIG dump keyfile name generation issues
There are issues with
<view>.tsigkeys dump keyfile name generation. Buffer size is insufficient and slashes may not be handled correctly.
ISC is looking for an experienced support engineer or systems administrator to provide third-level support for our open source. We have a team of 6 who provide 7 x 24 coverage, all working from home. https://isc.recruitee.com/o/support-engineer-for-isc-bind-and-kea-dhcp-newmarket