PHOENIX-1365 Make sequence salt buckets configurable

Conflicts:
	phoenix-core/src/it/java/org/apache/phoenix/end2end/index/LocalIndexIT.java
	phoenix-core/src/it/java/org/apache/phoenix/end2end/index/ViewIndexIT.java
	phoenix-core/src/main/java/org/apache/phoenix/coprocessor/MetaDataEndpointImpl.java
	phoenix-core/src/main/java/org/apache/phoenix/query/ConnectionQueryServicesImpl.java
	phoenix-core/src/main/java/org/apache/phoenix/query/QueryServicesOptions.java
	phoenix-core/src/main/java/org/apache/phoenix/util/MetaDataUtil.java
	phoenix-core/src/test/java/org/apache/phoenix/query/QueryServicesTestImpl.java