Backport timestamp fix for MetaDataEndPointImpl to 3.0
PHOENIX-1214 SYSTEM.CATALOG cannot be created when first connection to cluster is tenant-specific (Jan Van Besien)

Conflicts:
	phoenix-core/src/main/java/org/apache/phoenix/query/ConnectionQueryServicesImpl.java
	phoenix-core/src/main/java/org/apache/phoenix/util/JDBCUtil.java
	phoenix-core/src/test/java/org/apache/phoenix/util/JDBCUtilTest.java
PHOENIX-1357 Salt sequence table to prevent same RS from getting all sequence calls
PHOENIX-1361 Sequence value goes backwards if sequence validated before reserved
Merge branch '3.0' of https://git-wip-us.apache.org/repos/asf/phoenix into 3.0