[tripleo][ci] collectd-mysql

Greetings,

More fun as usual.

Error: Problem: cannot install the best candidate for the job - nothing provides libmysqlclient.so.21()(64bit) needed by collectd-mysql-5.11.0-2.el8.x86_64 - nothing provides libmysqlclient.so.21(libmysqlclient_21.0)(64bit) needed by collectd-mysql-5.11.0-2.el8.x86_64 (try to add '--skip-broken' to skip uninstallable packages or '--nobest' to use not only best candidate packages)

https://bugs.launchpad.net/tripleo/+bug/1896178

https://review.rdoproject.org/r/#/c/29472/

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