Apply pylint to scripts/construct_context*.py

1. Run pyformat scripts/construct_context.py -s 4 --force_quote_type
none -i to fix formatting
2. Wrap #pylint: [disable|enable]=line-too-long in tests

Test: m construct_context construct_context_test
Test: pylint --rcfile tools/repohooks/tools/pylintrc
build/soong/scripts/construct_context.py
build/soong/scripts/construct_context_test.py
Bug: 195738175

Change-Id: I2e756b17aae3e70ddaa03356c78f1f2f85c0f6a5