add the package-install tags to some tasks in check_mandatory_vars
add the package-install tags to some tasks in check_mandatory_vars

We'll want these checks to always run when we're installing packages

Signed-off-by: Andrew Schoen <1bb641dc23c3a93cce4eee683bcf4b2bea7903a3@redhat.com>

ceph/ansible-ceph-common