LU-3143 tests: pass correct facet to wait_osc_import_state()

LU-3143 tests: pass correct facet to wait_osc_import_state()

This patch fixes recovery-small test 29a and some other tests
to pass correct facet to wait_osc_import_state(), which will
make the tests pass under failover configuration.

Test-Parameters: envdefinitions=SLOW=yes \
clientdistro=el6 serverdistro=el6 clientarch=x86_64 \
serverarch=x86_64 clientcount=4 osscount=2 mdscount=2 \
austeroptions=-R failover=true useiscsi=true \
testlist=recovery-small

Change-Id: I68b8d2f2528223a5140eed5724c2a4ffdd1988fa
Signed-off-by: Jian Yu <jian.yu@intel.com>
Reviewed-on: http://review.whamcloud.com/6100
Tested-by: Hudson
Reviewed-by: Niu Yawei <yawei.niu@intel.com>
Tested-by: Maloo <whamcloud.maloo@gmail.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>