Loosen restrictive regex on syncrepl keepalive

[gcoxmoz]

Pull Request (PR) description

https://www.openldap.org/doc/admin25/slapdconfig.html - "The keepalive parameter sets the values of idle, probes, and interval used to check whether a socket is alive; idle is the number of seconds a connection needs to remain idle before TCP starts sending keepalive probes; probes is the maximum number of keepalive probes TCP should send before dropping the connection; interval is interval in seconds between individual keepalive probes."

The keepalive parameter from #412 is Pattern['\A\d{2}:\d{2}:\d{2}\z'] - those {2} items are overly restrictive: a lax idle config may wish for over 99 seconds before starting probes, an aggressive probe config may want to recycle connections at, say, 3 misses. So, this loosens the restriction to Pattern['\A\d+:\d+:\d+\z'] and gives back looser/tighter tuning.

This Pull Request (PR) fixes the following issues

[gcoxmoz]

Failing tests look specific to almalinux and unrelated to the PR.

[TheMeier]

Yes this is unrelated, but it certainly should be fixed before merging anything :(

2024-05-08T17:21:18.9408003Z �[00;00m�[00;33m  Error: Execution of '/usr/bin/dnf -d 0 -e 1 -y install openldap-servers' returned 1: Error: 

[gcoxmoz]

https://bugzilla.redhat.com/show_bug.cgi?id=2278783 - So the runner is presumably a 9.4 and epel is providing a busted openldap-servers package until epel gets the new package.