Support for non-root SSH user, improved remote CIB query, noop commands

1. Add support for non-root SSH user when connecting to remote site to query replication info and active master. 

2. For multiple master-slave resources, if a command is executed to a node that does not belong to a node group, an OCF_SUCCESS is returned. This works by adding a location rule for a primitive/master-slave resource to a node with -INFINITY score. For example I have this cluster:

        ```
        [root@node1 ~]# crm_mon -A1
        Last updated: Tue Oct 14 06:17:03 2014
        Last change: Sat Oct 11 03:34:08 2014 via crm_attribute on node1
        Stack: cman
        Current DC: node1 - partition with quorum
        Version: 1.1.10-14.el6_5.3-368c726
        3 Nodes configured
        9 Resources configured


        Online: [ node1 node2 node3 ]

         Resource Group: g-booth
             booth-ip	(ocf::heartbeat:IPaddr2):	Started node2
             booth	(ocf::pacemaker:booth-site):	Started node2
         Master/Slave Set: ms_MySQL_users [p_mysql_users]
             Masters: [ node1 ]
             Slaves: [ node2 ]
         Master/Slave Set: ms_MySQL_api [p_mysql_api]
             Masters: [ node3 ]
         users_r_vip	(ocf::heartbeat:IPaddr2):	Started node1
         users_w_vip	(ocf::heartbeat:IPaddr2):	Started node1
         api_r_vip	(ocf::heartbeat:IPaddr2):	Started node3
         api_w_vip	(ocf::heartbeat:IPaddr2):	Started node3

        Node Attributes:
        * Node node1:
            + master-p_mysql_users         	: 1060
            + readable                        	: 1
        * Node node2:
            + master-p_mysql_users         	: 60
            + readable                        	: 1
        * Node node3:
            + master-p_mysql_api       	: 1060
            + readable                        	: 1
        ```

    And these rules:

        ```
        location location-p_mysql_api p_mysql_api \
                rule -inf: #uname eq node1
        location location-p_mysql_api-1 p_mysql_api \
                rule -inf: #uname eq node2
        location location-p_mysql_users p_mysql_users \
                rule -inf: #uname eq node3
        ```

    When the agent issues a monitor command for node1 where the OCF_RESOURCE_INSTANCE is p_mysql_users, it will be a noop and will return an OCF_SUCCESS immediately. In the future we need to support OCF_NOT_SUPPORTED as well.

3. Merged auto-position fix by Kenny