LU-15876 test: restore missing spaces in ALWAYS_EXCEPT

LU-15876 test: restore missing spaces in ALWAYS_EXCEPT

In sanity-flr, restore missing spaces in ALWAYS_EXCEPT.

Fixes: a45fe93cd8 ("LU-14765 test: disable sanity-flr/44c")
Test-Parameters: trivial testlist=sanity-flr fstype=zfs
Signed-off-by: John L. Hammond <jhammond@whamcloud.com>
Change-Id: Id2fa88b72d021cf114a80ae7dbd1f80bfb31a8b2
Reviewed-on: https://review.whamcloud.com/47406
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Tested-by: Oleg Drokin <green@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>