Change replication SSL ACL tests to avoid certificate expiration

Change the ACL test case in the replication_ssl and replication2_ssl
tests to use certificates generated within the tests instead of
relying on certificates created outside the test that are prone to
expire and cause spurious test failure.

Also change the replication_ssl and replication2_ssl tests to avoid a
cycle of standing up the test clusters and then immediately restarting
them before any tests cases execute. This should make the test
execution slightly faster for both test modules.

This commit also changes the tests to be a bit more robust in checking
for cluster state when restarting nodes and removes an unnecessary
five second sleep call in the replication_ssl test.
Merge pull request #662 from basho/bugfix/avoid-replication-cert-expiry

Change replication SSL ACL tests to avoid certificate expiration