Remove perl library from Ubuntu installs
Remove perl library from Ubuntu installs

It seems that the package was added a long time ago [1], and might
have been needed for the percona tooling. This makes sense if we're
downloading the dep - but we're no longer doing that and can rely
on apt's resolver to find the correct packages. Even then, this is
the client install and doesn't use percona anyway.

[1] https://review.openstack.org/238748

Change-Id: I9a9f877e818c94954e7fb3e86edef7295c51d2e2

openstack/openstack-ansible-galera_client,openstack/openstack-ansible-galera_client