Add comment to Jira issue when slug provided in opslog entry

[ryangsteele]

It would be really handy if Imbi could add a comment to the Jira issue identified by the slug provided when creating/updating an opslog entry, so that folks reviewing the ticket can easily find related maintenance/operational tasks.

[dave-shawley]

I've thought about that particular feature a few times now. It would be super handy. I would implement this as a "create-opslog" automation and a jira integration. I described what this currently looks like in the the description of AWeber-Imbi/imbi-api#65 and AWeber-Imbi/imbi-schema#19.

We would add a new automation type in imbi/automations/models.py and the schema. I don't like the way that automation types work today since they are tightly coupled between the UI, API, and DB ☹️ ... definitely room for improvement here

As for the integration, we would have to look into the Jira API and figure out how to get user-bound tokens working similar to what @in-op did with Google+AWS. I would prefer user-bound authentication instead of an API key even if the API supports it.