Manage IPtables rules as an option

Allow the user to not configure IPtables rules with a new param:
manage_fw.

This parameter is at True by default to maintain backward compatibility.
Merge pull request #30 from enovance/manage-fw

Manage IPtables rules as an option
corosync: add parameter for settle waiting

Add parameters to change exec values for timeout, tries and try_sleep.
Set default values like old model to keep backward compatibility.
Signed-off-by: Emilien Macchi <emilien.macchi@enovance.com>
Merge pull request #31 from enovance/manage-timeout

corosync: add parameter for settle waiting
Add pacemaker ocf resources support.

Included a new resource_name parameter, because the ocf naming
convention is module:Resource (neutron:OVSCleanup for example),
but pcs can't create a resource with name neutron:OVSCleanup,
the ':' makes it fail.
Merge pull request #32 from mangelajo/master

Add pacemaker ocf resources support.