LU-13343 tests: skip recovery-small test_140 with SSK

LU-13343 tests: skip recovery-small test_140 with SSK

recovery-small test_140a and test_140b are using a 'local client',
ie a client mounted on a server node.
This is not compatible with SSK keys installed by the test framework,
so just skip these tests when running with SSK.

Test-Parameters: trivial
Test-Parameters: env=SHARED_KEY=true,ONLY=140 testlist=recovery-small
Signed-off-by: Sebastien Buisson <sbuisson@ddn.com>
Change-Id: I420deed9dbc50da622766648a51f885ed01203c6
Reviewed-on: https://review.whamcloud.com/37832
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Tested-by: jenkins <devops@whamcloud.com>
Reviewed-by: James Nunez <jnunez@whamcloud.com>