Add WhiteListPolicy
Merge branch '1.0' into 2.0

Conflicts:
	driver-core/src/main/java/com/datastax/driver/core/Cluster.java
	driver-core/src/test/java/com/datastax/driver/core/CCMBridge.java
	driver-core/src/test/java/com/datastax/driver/core/LoadBalancingPolicyTest.java