LU-16904 tests: use 2-component layout in sanity-compr

LU-16904 tests: use 2-component layout in sanity-compr

Set system with 2-component PFL layout (1 stripe each) to see if
only using a PFL layout is causing any test-script issues.

Allow compr_STRIPEPARAMS/fs_STRIPEPARAMS to change layout instead
of COMPR_EXTRA_LAYOUT for consistency with other test scripts.

Fix issue in setstripe_getstripe funtion to only print layout of given
dir/file

Test-Parameters: trivial testlist=sanity-compr
Test-Parameters: testlist=sanity-compr env=compr_STRIPEPARAMS="-E 64k -c 1 -E eof"
Test-Parameters: testlist=sanity-compr env=compr_STRIPEPARAMS="-E 64k -c 1 -E eof -c 2"
Test-Parameters: testlist=sanity-compr env=compr_STRIPEPARAMS="-E 64k -c 1 -E 1M -c 2 -E eof -c 4 -S 4M"
Signed-off-by: Wei Liu <sarah@whamcloud.com>
Change-Id: I8fa60c104bc69876be8805edbaab1574207d6cc2
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/53651
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>
Reviewed-by: Artem Blagodarenko <ablagodarenko@ddn.com>