Pacemaker resources left UNCLEAN after controller node failure

Issue

• One of the controller nodes had a very serious hardware issue and the node shut itself down.
• Pacemaker tried to power it back on via its IPMI device but the BMC refused the power-on command.
• At this point, all resources owned by the node transitioned into UNCLEAN and were left in that state even though the node has SBD as a second-level fence device defined.