packaging: Starting ssh before adding host in AIO

In some cases during the AIO installation, host cannot be
added because ssh server is not started by default on
Fedora 18. This patch verifies that AIO plugin requires
openssh-server package and that ssh service is started
before adding host.

Bug-Url: https://bugzilla.redhat.com/896472
Change-Id: I84cbacec81d08cc72d8951887b5ad44c3c2cb4fa
Signed-off-by: Alex Lourie <alourie@redhat.com>
(cherry picked from commit 52268c01b099ddce58aae9627c701761d46b92fd)
(cherry picked from commit bb2ed17e901695c0fa92e24bd2e7f9425a623373)