LU-12672 tests: Correctly determine mdccli in recovery-small test 66

LU-12672 tests: Correctly determine mdccli in recovery-small test 66

As is aparently the filtering by awk does not work and
we get errors like this:

error: get_param: param_path 'lustre-MDT0001-mdc-ffff880114af9800/mds_conn_uuid': No such file or directory
error: set_param: param_path 'mdc/lustre-MDT0000-mdc-ffff880114af9800
lustre-MDT0001-mdc-ffff880114af9800/import': No such file or directory

Test-Parameters: trivial testlist=recovery-small
Change-Id: Ibbcc79f71d2fa5966da90f0c8d0e98a3c5f2a964
Signed-off-by: Oleg Drokin <green@whamcloud.com>
Reviewed-on: https://review.whamcloud.com/35827
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: James Nunez <jnunez@whamcloud.com>