Copy action_plugin: encode content when dict.

When content is processed and found to be valid JSON it is decoded into a dict. To write it out to a file we need to encode it back into a string.

Addresses GH-5914.

docs_pull_request: Add parameters highlighting

Set use_mirrors default to "no" for the pip module

Fix zfs create command for properties with spaces

Update guide_aws.rst

Signed-off-by: Brian Coca <briancoca+dev@gmail.com>

PyPI moved to a CDN on 2013-05-26, so mirrors are now largely
unnecessary and pip removed the functionality in 1.5. More importantly
(and why I wrote this request): on 2014-02-15 the mirror directory was
taken offline, so mirrors may not work anymore even for pip versions
that support them.

Docsite: Fixed typo.

If a property value contains one or more spaces, the zfs command will fail.
With value quoted this behavior is fixed.

After commit 254f87e7, non-ascii input broke logging to syslog.

Fixes #5533
Closes #5605
Closes #5606
Closes #5607

I had to remerge this as the original would not automerge. #4703

Doc improvements / fixes

Merge branch 'fix-postgres_user_to_understand_pg_namespaces' of https://github.com/alanfairless/ansible into alanfairless-fix-postgres_user_to_understand_pg_namespaces

Merge branch 'postgres_alter_role' of https://github.com/jinnko/ansible into jinnko-postgres_alter_role

Conflicts:
	library/database/postgresql_user

Added highlighting to parameter references in docs so that they standout a bit better.