The patch fixes a small bug in cloudconfig._process_content, where the
chaining of encoders (gzip and base64 for instance) weren't treated
correctly. It also adds support for processing both lists of dicts and
dicts in the write-files plugin.
Also, we added tests for using !!binary| marker for yaml binary
streams, as well as a couple of other tests.
Change-Id: I9edcdcd93af4e058a0d1f8c9cdaa1b2aa9e9618d
Closes-Bug: #1409270
b34f3b4b5d