Verify systemd is reloaded after galera post install
Verify systemd is reloaded after galera post install

In the galera post install playbook, the systemd configuration files are
modified. This change verifies that systemctl daemon-reload is called,
so that these files are re-read, and the configuration is up-to-date.

Closes-Bug: #1656821
Change-Id: I5d8fcf1f2500146fc86db4dd19cd30aaa1055adb

os-cloud/openstack-ansible-galera_server,openstack/openstack-ansible-galera_server,os-cloud/openstack-ansible-galera_server,openstack/openstack-ansible-galera_server