Description of problem:

When storage server is up and running, rhq-Server status still in MAINTENANCE mode only.

Version-Release number of selected component (if applicable):
4.13.1

How reproducible:
Always

Steps to Reproduce:
1. Stop Storage server (using service command / kill the process)
2. now rhq-server comes to MAINTENANCE mode.
3. now start the storage server, once it is up and running rhq-server is not getting connected to subSystem until rhq-server restart happens.

Actual results:

rhq-server is not connected to subSystem storage server, once the storage is up and running.

Expected results:
rhq-server should get connected to subSystem storage server, once the storage is up and running.

Additional info:
Storage client subsystem wasn't initialized because it wasn't possible to connect to the storage cluster. The RHQ server is set to MAINTENANCE mode. Please start the storage cluster as soon as possible.: com.datastax.driver.core.exceptions.NoHostAvailableException: All host(s) tried for query failed (tried: esmon/141.137.236.129 ([esmon/141.137.236.129] Cannot connect))
        at com.datastax.driver.core.ControlConnection.reconnectInternal(ControlConnection.java:185) [cassandra-driver-core-1.0.8-jboss-1.jar:]
        at com.datastax.driver.core.ControlConnection.connect(ControlConnection.java:80) [cassandra-driver-core-1.0.8-jboss-1.jar:]
        at com.datastax.driver.core.Cluster$Manager.init(Cluster.java:839) [cassandra-driver-core-1.0.8-jboss-1.jar:]
        at com.datastax.driver.core.Cluster$Manager.access$100(Cluster.java:763) [cassandra-driver-core-1.0.8-jboss-1.jar:]
        at com.datastax.driver.core.Cluster.<init>(Cluster.java:93) [cassandra-driver-core-1.0.8-jboss-1.jar:]
        at com.datastax.driver.core.Cluster$Builder.build(Cluster.java:732) [cassandra-driver-core-1.0.8-jboss-1.jar:]
        at org.rhq.cassandra.util.ClusterBuilder.build(ClusterBuilder.java:130) [rhq-cassandra-util-4.13.1.jar:4.13.1]
        at org.rhq.cassandra.schema.SessionManager.initSession(SessionManager.java:33) [rhq-cassandra-schema-4.13.1.jar:4.13.1]
        at org.rhq.cassandra.schema.AbstractManager.initClusterSession(AbstractManager.java:100) [rhq-cassandra-schema-4.13.1.jar:4.13.1]
        at org.rhq.cassandra.schema.AbstractManager.initClusterSession(AbstractManager.java:90) [rhq-cassandra-schema-4.13.1.jar:4.13.1]
        at org.rhq.cassandra.schema.VersionManager.checkCompatibility(VersionManager.java:259) [rhq-cassandra-schema-4.13.1.jar:4.13.1]
        at org.rhq.cassandra.schema.SchemaManager.checkCompatibility(SchemaManager.java:136) [rhq-cassandra-schema-4.13.1.jar:4.13.1]