fstests: common/btrfs: add _ prefix to temp fsid helper functions

Just adding a _ prefix to the two temp fsid helper functions and
a rename in common/btrfs to keep the coding style consistent.

Reviewed-by: Zorro Lang <zlang@redhat.com>
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Anand Jain <anand.jain@oracle.com>
5 files changed