2.7.4
CI: pycodestyle fixes evident on centos8 stream
Tests: fix imported but unused modules (F401)
Tests: fix unused variable (F841)
Tests: Fix test cases for signoff CI
Tests: remove python paramiko library from tests.
Fix new pycodestyle E275 requirement
Tests: Minor improvement to the Multihost RST files
Tests: Code review fixes for paramiko removal.
Add empty conftest.py and update path to run basic tests
tests: fix missing new line at the eof: src/tests/multihost/requirements.txt