Fix the failing interactive job submits in knightly OOD

Description

The interactive job submission failed on the knightly OOD UI failed because it couldn't find the munge socket at /var/run/munge/munge.socket.2. This occurred because the munge service did not start during deployment. The ansible task responsible for it only enabled it, but did not start it. Since it's a deployment task, we need to start the service.

Solution

Start the slurmd and munge services in the ansible role - ansible/roles/slurm_client/tasks/main.yml