Sanity checks for Kea 1.9.8 rc1

Please verify the packages and files according to "4. Sanity Checks" chapter on:
    https://wiki.isc.org/bin/view/QA/KeaReleaseProcess#4.%20Sanity%20Checks
and your imagination.
Before starting any checks, please state what check you are doing in a
thread/discussion (not as comment) in Sanity Checks issue in GitLab:
    
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/1.9.8-rc1
   /data/shared/sweng/kea/releases/premium-1.9.8-rc1
   /data/shared/sweng/kea/releases/subscription-1.9.8-rc1

SHA256 (kea-1.9.8.tar.gz) = 1008b521cdd8105d28af7ec0b78f2c68ac2601ccd3c1fe46b5b12c40da296e5d
SHA256 (kea-premium-1.9.8.tar.gz) = f119f7104eae98af18f6cf4ac6d3146e677358c4a143213de69373d4fc8c09d6
SHA256 (kea-subscription-1.9.8.tar.gz) = 9da26fff0f5a32ba1218db2e0c3ebaa0a52c270c436d1f6526197f3180187d4d

2) [rpm/deb packages] on packages.isc.org, exact packages versions are stored here:
    https://jenkins.aws.isc.org/job/kea-dev/job/pkg/377/
    Release version is 1.9.8-isc0034220210524113122 (please verify if it is this version while installing).
    Install instruction is here: https://wiki.isc.org/bin/view/QA/KeaReleaseProcess, chapter 4. Sanity Checks, point 9.