LU-12251 tests: stop running sanity-flr for PPC

LU-12251 tests: stop running sanity-flr for PPC

Stop running all sanity-flr tests for PPC client
testing until we understand and the sanity-pfl test
suite to passes all testing for PPC clients.

Test-Parameters: trivial clientarch=ppc64 testlist=sanity-flr
Test-Parameters: testlist=sanity-flr

Signed-off-by: James Nunez <jnunez@whamcloud.com>
Change-Id: Iee044e6995ed4f6cca5f6b7f92eee6b59cb7018b
Reviewed-on: https://review.whamcloud.com/37563
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Emoly Liu <emoly@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>