actions: Make subparsers mandatory for service action too
actions: Make subparsers mandatory for service action too

Signed-off-by: Sunil Mohan Adapa <3eaa7035e78e5eca849aa1e8ea4aaf97b4588601@medhas.org>

kkampardi/Plinth,kkampardi/Plinth,kkampardi/Plinth,kkampardi/Plinth,vignanl/Plinth,harry-7/Plinth,kkampardi/Plinth,vignanl/Plinth,harry-7/Plinth,vignanl/Plinth,harry-7/Plinth,vignanl/Plinth,harry-7/Plinth,vignanl/Plinth,harry-7/Plinth