rename job metrics label to job_name

[stremovsky]

Another fix for: #5345

[hashicorp-cla]

All committers have signed the CLA.

[notnoop]

Thank you for your contribution. It seems that #5345 was closed by #5850 so this is no longer needed. Closing this - please reopen if you are still seeing issues. Thank you so much!

[rgl]

@notnoop I'm using nomad 1.0.0-beta3 and the metric label is still job instead of job_name. For example:

nomad_client_allocs_cpu_allocated{alloc_id="b15d7cc8-22d5-3e31-4a6d-096f8075abce",job="go-info",namespace="default",task="go-info",task_group="go-info"}

This means that when read from prometheus it will end up being named exported_job:

nomad_client_allocs_cpu_allocated{alloc_id="b15d7cc8-22d5-3e31-4a6d-096f8075abce",exported_job="go-info",instance="client1:4646",job="nomad",namespace="default",task="go-info",task_group="go-info"}

Can this be re-opened?

[github-actions]

I'm going to lock this pull request because it has been closed for 120 days ⏳. This helps our maintainers find and focus on the active contributions.
If you have found a problem that seems related to this change, please open a new issue and complete the issue template so we can capture all the details necessary to investigate further.