A number of changes were done to the imports in the files.
- Clean up flake8 H301 multiple imports per line
- Remove noqa from top of files, allowing flake8 to run
on all files.
- Clean up relative imports in most places. This will
simplify python3 support later.
- Partially sort the imports. A later commit will
enable that check since doing that here would have made
the changeset even bigger.
Story: 2003499
Task: 26561
Change-Id: Id5f95559f0d4604f4db1a1d74098063fd510142c
Signed-off-by: Al Bailey <Al.Bailey@windriver.com>