A couple of batch unit tests
Remove line
Pylint fix
Mock LocalClient in batch unit tests
Pylint fix, again.
avoid shadowing built-in `buffer` type in states.syslog_ng._build_config

rename local var: buffer => buf
Merge pull request #14149 from hulu/syslog-ng-buffer-shadow

avoid shadowing built-in `buffer` type in states.syslog_ng._build_config
fix typos in doc/topics/tutorials/intro_scale.rst
Merge pull request #14151 from hulu/intro-scale-doc-copyedit

fix typos in doc/topics/tutorials/intro_scale.rst
Merge pull request #14139 from rallytime/batch_test

A couple of batch unit tests
Merge branch 'develop' into with-pylint-pragmas