LU-11127 test: sanity-flr OST not recovery fast enough

LU-11127 test: sanity-flr OST not recovery fast enough

use wait_recovery_complete() than wait_osc_import_state() to be more
patient for OST recovery.

Test-Parameters: trivial mdtcount=2 mdscount=2 testlist=sanity-flr,sanity-flr,sanity-flr,sanity-flr

Test-Parameters: mdtcount=2 mdscount=2 testlist=sanity-flr,sanity-flr,sanity-flr,sanity-flr

Signed-off-by: Bobi Jam <bobijam@whamcloud.com>
Change-Id: I2d652d09b0575a720e5ef9701fb7067cbf454079
Reviewed-on: https://review.whamcloud.com/32922
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: James Nunez <jnunez@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>