upgrades: deploy mod_ssl when upgrading apache

upgrades: deploy mod_ssl when upgrading apache

1) When Apache is upgraded, install mod_ssl rpm.
   See https://bugs.launchpad.net/tripleo/+bug/1682448
   to understand why we need mod_ssl.

2) All services that run Apache for API will use the snippet from
   Apache service to deploy mod_ssl, so we don't duplicate the code
   in all services. It's using the same mechanism as ovs upgrade to
   compile upgrade_tasks between both services.

Change-Id: Ia2f6fea45c2c09790c49baab19b1efcab25e9a84
Closes-Bug: #1686503
(cherry picked from commit a6041608ca68aad4298ed9e8febafc442a250a55)