fstests: update tests to skip unsupported raid profile types

fstests: update tests to skip unsupported raid profile types

Tests btrfs/197, btrfs/198, and btrfs/297 test multiple raid types in
their workout() function.  We may not support some of the raid types, so
add a check in the workout() function to skip any incompatible raid
profiles.

Reviewed-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Anand Jain <anand.jain@oracle.com>