Remove the before relationship on karaf::service to anchor['karaf::end']
to allow the karaf service to be notified from outside of the karaf
module, e.g. to allow a properties file change on installation.
Update karaf_spec test to remove removed dependency.
Update karaf_kar resource type:
 * Allow periods in :name
 * Add a :delay param which can be used to introduce a bigger
intra-retry period to allow for restarts etc. 
Updated karaf_kar type unit tests as appropriate.