Add checkcrm plugin for Pacemaker

Signed-off-by: Christophe Vanlancker <christophe.vanlancker@inuits.eu>
Add script source and change pkg name

Signed-off-by: Christophe Vanlancker <christophe.vanlancker@inuits.eu>
Rework checkcrm to work as a class

Signed-off-by: Christophe Vanlancker <christophe.vanlancker@inuits.eu>