adding role to management nodes for testing

plays/mgmtnodes.yml

@@ -38,6 +38,7 @@
   - { role: slurm-common, tags: [ slurm, slurm-common ]  }
   - { role: slurm_config, tags: [ slurm, slurm-config ] }
   - { role: slurm-start, start_slurmdbd: True, start_slurmctld: True, tags: [ slurm-start ]  }
+  - { role: telegraf, tags: [ monitoring ] }
 #  - { role: provision_slurm, use_active_directory: False, lockpath: "/mnt/home", tags: [ slurm ]  }
 #  - { role: provision_homedir, use_active_directory: False, mntpt: "/mnt/home", tags: [ provisioning ] }