High: PE: Implement three recovery policies based on op_status and op_rc

Three types of failure recovery:

• soft ::= stop and retry
• hard ::= stop and retry - current node is excluded
• fatal ::= stop - all nodes are excluded

OCF Return Codes:

• OCF_SUCCESS=0 N/A
• OCF_ERR_GENERIC=1 soft
• OCF_ERR_ARGS=2 fatal
• OCF_ERR_UNIMPLEMENTED=3 hard
• OCF_ERR_PERM=4 hard
• OCF_ERR_INSTALLED=5 hard
• OCF_ERR_CONFIGURED=6 fatal
• OCF_NOT_RUNNING=7 N/A or soft depending on the context
• OCF_RUNNING_MASTER=8 N/A
• OCF_FAILED_MASTER=9 soft
• Any other value soft

Operation status (from enum op_status_t):

• LRM_OP_PENDING = -1, soft
• LRM_OP_DONE, N/A
• LRM_OP_CANCELLED, N/A
• LRM_OP_TIMEOUT, soft
• LRM_OP_NOTSUPPORTED, hard
• LRM_OP_ERROR depends on rc value

Mercurial revision: 77d174805a67cd9b5f246af34d05f68be212ee5c