* Update triple single quotes to triple double quotes
This change was fully automated.
The updated Python files have been verified to tokenize the same as the originals, except for the expected change in quoting of strings, which were verified through literal_eval.
* Manual conversion of docstring quotes
* Add integration tests for ansible-doc.
* Enable tests that now pass
* Cleanup processing of plugin docs
* Mostly separate the steps of processing plugin docs
1) Acquire source data
2) Transform and calculate additonal data
3) Format data for output
4) Output data
format_plugin_doc() is still mixing transformation and formatting but
that should be fixed in a devel-only change
* Raise exceptions in _get_plugin_doc() on errors.
* Remove check to exclude on blacklisted extensions. We already request
only .py files
* If there is no DOCUMENTATION entry in the plugin, raise an exception
from _get_plugin_doc(). Everywhere we use _get_plugin_doc(), this is
treated as an error
* If there is no ANSIBLE_METADATA raise an exception as well as
displaying of docs assumes that this has been set.
* If there is neither DOCUMENTATION nor ANSIBLE_METADATA, warn about the
lack of METADATA and error on the lack of DOCUMENTATION. Lack of
DOCUMENTATION is more important so it is what the user should see.
* Add a few special cases for backwards compat. These should probably
be made errors in 2.10:
* no docs but has metadata shows no documentation rather than an error
* empty plugin file shows no doumentation rather than an error
* Simplify backwards compatibility logic.
