patchtest: patterns: add module, refactor

Currently, patchtest has a lot of spread-out definitions for patterns
used in various setup and test functions. Organize these by putting them
all into a new patterns.py module. This allows the tests/pyparsing
directory to be removed, as it is now redundant. Also remove some
definitions where they were duplicated or unused, and perform some
renames to improve readability and avoid collisions. Many of these
variables are composed from others, so the file is only partially
sorted.

(From OE-Core rev: 1ab55d495957918be532a36224b5598c9955a44d)

Signed-off-by: Trevor Gamblin <tgamblin@baylibre.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/lib/patchtest/tests/test_python_pylint.py

@@ -5,6 +5,7 @@
 # SPDX-License-Identifier: GPL-2.0-only
 
 import base
+import patterns
 from io import StringIO
 from data import PatchTestInput
 from pylint.reporters.text import TextReporter