Code review comment for lp:~jamalta/launchpad/515761

= Summary =

Anonymous API Access to some collections returns nothing.

== Proposed fix ==

Create View classes in security.py for the interfaces that need anonymous access.

== Pre-implementation notes ==

Decision to make these collections available to everyone needs to be considered during review.

== Implementation details ==

Created ViewBugMessage, ViewProductRelease, and ViewBugSubscription in security.py with checkUnauthorized and checkAuthorized both returning True.

== Tests ==

% bin/test -vvct webservice/xx-bug.txt
% bin/test -vvct xx-project-registry

== Demo and Q/A ==

>>> from launchpadlib.launchpad import Launchpad
>>> launchpad = Launchpad.login('test', '', '', 'https://api.launchpad.dev/beta/')
>>> list(launchpad.projects['alsa-utils'].series)
[<project_series at https://api.launchpad.dev/beta/alsa-utils/trunk>]
>>> list(launchpad.bugs[1].messages)
[<message at https://api.launchpad.dev/beta/firefox/+bug/1/comments/0>, <message at https://api.launchpad.dev/beta/firefox/+bug/1/comments/1>]
>>> list(launchpad.bugs[1].subscriptions)
[<bug_subscription at https://api.launchpad.dev/beta/bugs/1/+subscription/stevea>, <bug_subscription at https://api.launchpad.dev/beta/bugs/1/+subscription/name12>]

== Launchpad lint ==

Checking for conflicts. and issues in doctests and templates.
Running jslint, xmllint, pyflakes, and pylint.
Using normal rules.

Linting changed files:
  lib/canonical/launchpad/security.py
  lib/canonical/launchpad/apidoc/wadl-testrunner.xml
  lib/lp/bugs/stories/webservice/xx-bug.txt
  lib/lp/registry/stories/webservice/xx-project-registry.txt