LU-15854 tests: fix version check for sanity test_64

LU-15854 tests: fix version check for sanity test_64

Add missing or proper server version check for interop
testing for sanity test 64i and 64h.

Test-Parameters: trivial testlist=sanity env=ONLY=64
Fixes: 38c78ac ("LU-9704 grant: ignore grant info on read resend")
Fixes: 4894683 ("LU-14124 target: set OBD_MD_FLGRANT in read's reply")
Change-Id: Iec21a407f467db3e9cb197d0a1436ea4e821bef2
Signed-off-by: Aurelien Degremont <degremoa@amazon.com>
Reviewed-on: https://review.whamcloud.com/47343
Tested-by: jenkins <devops@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Mike Pershin <mpershin@whamcloud.com>