There are some obsoletes in 3.9 packages which lead yum to upgrade
directly from 3.7 to 3.9 when you ask for 3.8 packages while 3.9 repos
are enabled. Since we'd like to allow people to run one playbook to
upgrade from 3.7 to 3.8 to 3.9 we need to exclude those packages when
upgrading to 3.8

We set these variables using facts in init, no need
to duplicate the logic all around the codebase.

This commit relocates filter_plugings to lib_utils,
changes the namespacing to prevent unintended use of
older versions that may be present in filter_plugins/
directory on existing installs.

Add lib_utils to meta depends for roles

Also consolidate some plugins into lib_utils from
various other areas.

Update rpm spec, obsolete plugin rpms.

This commit removes openshift.common.service_type
in favor of openshift_service_type.

This commit also removes r_openshift_excluder_service_type
from plays in favor of using the role's defaults.

When a package install/update fails due to network blips or other spotty
availability, retry it. If the failure is a real failure (e.g. package
is really not there) it still fails after 3 tries (Ansible default).

- don't check pkg versions on Fedora, it won't work; they move
  faster than RHEL and it's not realistic to maintain that package
  list.
- handle differences between yum and dnf pkgspec for excluder
- work-around for a bug in dnf
  https://bugzilla.redhat.com/show_bug.cgi?id=1199432
- make requirement verify one play, don't run unnecessary checks on
  Fedora

* As follow-up on #4835, use absolute path also when unexcluding

Use absolute path when executing excluder as it's used when checking for excluder.