sensu/server: set manage_sensu_plugins to false by default
sensu/server: set manage_sensu_plugins to false by default

It's better to set it at False by default so the deployer has to enable
the parameter on one node with the plugins exported from this node.

It avoid dupplication resources when you forget to configure this
parameter and try to export the plugins frome everywhere.

Change-Id: Ied7baaf90bb5a98f338cdc0250078ee0b66d7c02

gwdg/puppet-openstack-cloud,gwdg/puppet-openstack-cloud,gwdg/puppet-openstack-cloud,gwdg/puppet-openstack-cloud