LU-7710 test: sync all clients in recovery-small 130[acb]

In recovery-small test_130[abc]() call sync on all clients rather than
just on the client where the test script is running.

Signed-off-by: John L. Hammond <john.hammond@intel.com>
Change-Id: I1d7aec650d08a6fb417a5df3509b657e9ccda902
Reviewed-on: http://review.whamcloud.com/18138
Tested-by: Jenkins
Reviewed-by: Jian Yu <jian.yu@intel.com>
Reviewed-by: James Nunez <james.a.nunez@intel.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>