Support OpenSwan in Neturon VPNaaS

Neutron VPNaaS chagned ipsec package for
OpenSwan. This commit updates the package.

Change-Id: I333501a405fbc552c575d26cfbac083646d05dfd
Rename ceilometer alarm service name

Rename service name "ceilometer-alarm-eval" to
"ceilometer-alarm-singleton" and "ceilometer-alarm-notify" to
ceilometer-alarm-notifier" in this patch.

Change-Id: I6619cc02874f6f59c43ba2952325e9d0533e395d
Merge "Rename ceilometer alarm service name"
Merge "Support OpenSwan in Neturon VPNaaS"