LU-13586 tests: Quota Pools with PFL and SEL

LU-13586 tests: Quota Pools with PFL and SEL

Add sanity-quota_71a that does write to a file
consisted of 2 components on different OSTs(each OST
relates to unique pool). Check that limits in quota
pools work properly. sanity-quota_71b does the same
but for a file with SEL.

Test-Parameters: envdefinitions=ONLY=71 testlist=sanity-quota
Change-Id: I835bec4c9b21c287142e1df9b4cfe797ec68fbef
Signed-off-by: Sergey Cheremencev <sergey.cheremencev@hpe.com>
Reviewed-on: https://review.whamcloud.com/38661
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Alexander Boyko <alexander.boyko@hpe.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>