bump arc-frontend to v1.2.9: disable arched service and restart on changes
bump arc-frontend to v1.2.9: disable arched service and restart on changes

disable arched is from v1.2.8: https://github.com/CSC-IT-Center-for-Science/ansible-role-arc-frontend/commit/34f70e0c9d98c6d3df92d949ec79e32e8cc26592

https://github.com/CSC-IT-Center-for-Science/ansible-role-arc-frontend/releases/tag/v1.2.9

restart on changes:
https://github.com/CSC-IT-Center-for-Science/ansible-role-arc-frontend/commit/f4da3b46692ac8b27372b1d73066804d90553ead

mantti/fgci-tut,CSC-IT-Center-for-Science/fgci-ansible,mantti/fgci-tut,mantti/fgci-tut