docs: update datasource rtd documentation for opennebula

[ubuntu-server-builder]

This bug was originally filed in Launchpad as LP: #1858878

Launchpad details

affected_projects = []
assignee = None
assignee_name = None
date_closed = None
date_created = 2020-01-08T20:42:29.878045+00:00
date_fix_committed = None
date_fix_released = None
id = 1858878
importance = wishlist
is_complete = False
lp_url = https://bugs.launchpad.net/cloud-init/+bug/1858878
milestone = None
owner = chad.smith
owner_name = Chad Smith
private = False
status = triaged
submitter = chad.smith
submitter_name = Chad Smith
tags = ['bitesize']
duplicates = []

Launchpad user Chad Smith(chad.smith) wrote on 2020-01-08T20:42:29.878045+00:00

Update "read the docs" content at:
doc/rtd/topics/datasources/opennebula.rst

Ensure it correctly represents behavior and configuration options in
cloudinit/sources/DataSourceOpenNebula.py

Example format/style should be something like:

doc/rtd/topics/datasources/ec2.rst

[blackboxsw]

This issue is vague and not really actionable at the moment and didn't get traction when originally filed. When we have a desirable recommended template for datasource documentation, we can open specific issues.