Add event storage for test_hbase_table_utils

event storage has been independent now, sync it to
tools/test_hbase_table_utils.py.

Change-Id: I38e467ab18c317ad12d66f641ad4419c0fe33bee
Fix storage.hbase.util.prepare_key() for 32-bits system

storage.hbase.utils.timestamp() will return long type object on 32-bits
system, which will cause exception in ceilometer/alarm/storage/impl_hbase.py:
'long' object has no attribute 'encode'.
Then developers on 32-bits system will never get local test passed.

This patch changes type check in prepare_keys() from int to six.integer_types,
which will work for both 32-bits and 64-bits system, python2 and python3
environment.

Note: no test code is added, because jenkins runs on 64-bits system. Reviewers
can download code and verify it on 32-bits system.

Change-Id: I57729ff67efe6d6036fe698e3d86491f9ed4600c
Closes-Bug: #1388181
Use 'pg_ctl' utility to start and stop database

Greping output for  starting message don't work all the time
because 'postgres' utility translate messages in other language
depending on computer settings

Change-Id: I6f48db92ccc16e8c75d76dd3fadbbeb9930f9cac
Merge "Add event storage for test_hbase_table_utils"
Merge "Fix storage.hbase.util.prepare_key() for 32-bits system"
Merge "Use 'pg_ctl' utility to start and stop database"