[Bug 1724623] Re: Update ubuntu cloud info

[John Chittum]

Attached is a possible patch to remedy some of the issues (and a few
other bugs i've seen in the backlog with errors re: EC2 and other
clouds). the gist:

1. change how we check if something is a cloud-image, generally
2. use /etc/cloud/build.info as a check if something is a Canonical cloud image
   2a. if it's rolled by someone else, hard to guarantee things
3. use /run/cloud-init/instance-data.json as a local store of info
   3a. this will run on most supported clouds, and provide more info

I've tried to make some graceful warning prints and error catches, along
the lines of "if it's not there, just move on."


** Patch added: "apport_cloud.patch"
   https://bugs.launchpad.net/ubuntu/+source/apport/+bug/1724623/+attachment/5635644/+files/apport_cloud.patch

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https://bugs.launchpad.net/bugs/1724623

Title:
  Update ubuntu cloud info

Status in apport package in Ubuntu:
  New

Bug description:
  add_cloud_info() in data/general-hooks/ubuntu.py needs an overhaul.

  Issues:
   - Using the presence of cloud-init to flag an image as a cloud image is incorrect now that ubuntu-server includes cloud-init (and ubuntu-core images)
   - Using the presence of EC2 metadata source is incorrect as many non-EC2 clouds provide EC2 metadata.  Thus we have bugs like bug #1722946 that are tagged as an 'ec2-images' bug which are clearly on openstack
   - Marking all bugs that have cloud-init but no EC2 metadata source as an 'uec-images' bug uses a name that no longer has meaning.

  Solution:
   - If cloud-init is present, check for /etc/cloud/build.info to indicate an Ubuntu cloud images, tag as 'cloud-images'.  Pull the build_name and serial from that file into the bug comments.
   - If cloud-init is present, check for the presence of /run/cloud-init/cloud.cfg.  Parse this yaml to determine the datasource type.  Add the datasource used to the bug comment.

  I have filed bug #1724626 to ask cloud-init development to surface
  more information from ds-identify to help ID the cloud so that we can
  better tag/annotate the bug.  There may also be some info we can get
  to indicate the image ID on more clouds than just AWS.  At a minimum I
  would like to see dsidentify make the EC2 platform it found available
  for consumers in cloud.cfg.  This would allow us to identify AWS EC2
  from look-alike datasources so that we can tag a bug as ec2-images for
  bug really on AWS and add EC2 specific fields to the
  description/attachments.

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