The cluster secret is shown at the cluster status tab
Added some functionalities to ClusterStatus

 * This will help with the HA refactoring
HA refactor: Use only ClusterStatus class for retrieve information

 * Remove CRMWrapper class
 * Extract promote/demote functionalities to a newer class NodePromoter
 * Every reference to CRMWrapper now uses the ClusterStatus class
Merge branch 'master' into figarocorso/ha-refactor
Added some space between summary and errors at cluster summary
Ported c1670f8 to the refactor

Unit tests are not yet working in this WIP branch
Removed magic number
Merge branch 'master' into figarocorso/ha-refactor

Conflicts:
	main/ha/src/EBox/HA/CRMWrapper.pm
	main/ha/src/EBox/HA/Model/Nodes.pm
Merge branch 'figarocorso/ha-refactor' of github.com:Zentyal/zentyal into figarocorso/ha-refactor
Merge from master fixed

 - I skipped a CRMWrapper call
Try-Catched crm_mon commands

 * Added some defensive code when ClusterStatus is not available
 * Added some feedback via UI
Fixed ClusterStatus unit tests
ClusterStatus creation is delayed till it's needed
Merge branch 'master' into figarocorso/ha-refactor
Merge pull request #1007 from Zentyal/figarocorso/ha-refactor

Figarocorso/ha refactor