Update Routed RPC tests to be runnable in CI

Update Routed RPC tests to be runnable in CI

Clear all data from shards before running test.
Find the leader and followers rather than assume the first controller
    is leader.
Do a better job of verifying shard contents.
Because test 23 is a subset of test 24, both tests were combined as
    test 23 and then test 24 was eliminated.

Change-Id: I63621efe814b7ab95d8990275ef14f4354698894
Signed-off-by: Phillip Shea <phillip.shea@hp.com>