LU-14853 tests: conf-sanity/32 upgrade 2.14/2.15 images

LU-14853 tests: conf-sanity/32 upgrade 2.14/2.15 images

Add filesystem upgrade images for conf-sanity test_32 for the
2.14.0 and 2.15.0 releases to confirm proper upgrade for the
on-disk filesystem format from these systems.

Add checks for new features added in these releases:
- OST pools, OST Pool Quotas
- fscrypt data encryption and filename encryption

Test-Parameters: trivial mdtcount=4 mdscount=2 env=ONLY=32 testlist=conf-sanity
Test-Parameters: trivial fstype=zfs env=ONLY=32 testlist=conf-sanity
Test-Parameters: trivial mdtcount=4 mdscount=2 testlist=sanity-quota

Signed-off-by: Andreas Dilger <adilger@whamcloud.com>
Signed-off-by: Jian Yu <yujian@whamcloud.com>
Change-Id: I58c1be54abc0a36b8bd0fd0139627af0a078e0f0
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/54666
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Sebastien Buisson <sbuisson@ddn.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>