Handler typo in tasks/slurmdbd_cluster.yml

[clil16]

When running the playbook we received an error:

TASK [galaxyproject.slurm : Create the slurmdbd cluster] ***********************
ERROR! The requested handler 'reload slurmdbd' was not found in either the main handlers list nor in the listening handlers list
FATAL: command execution failed

After looking at the tasks/slurmdbd_cluster.yml file the issue is on line 19. It is trying to notify the reload slurmdbd handler but it should be Reload slurmdbd since the handler in handlers/main.yml on line 7 uses a capital R in the name.

[clil16]

Please see this pull request with the fix: #52