Batcave

- Changed
- Improved cms.Client.merge().

- Added
- Added cms.Client.chmod_files().

- Changed
- Fix build.DockerDotNetCoreProduct() default for verfiles.
- Return AttributeError to fix hasattr() usage.
- Fixed issue with cms.Client.switch() creating existing branch.
- Convert cms to use arg list rather than requiring lists.
- Upgraded docker to 3.5.0.
- Upgraded google-cloud to 0.34.0.
- Upgraded psutil to 5.4.7.
- Upgraded pyodbc to 4.0.24.
- Upgraded setuptools to 40.2.0.
- Pylint cleanup on cms module.

- Changed
- Ignoring stderr in cloudmgr.Image.manage().

- Changed
- Ignoring stderr in cloudmgr.Image.tag().
- Pylint cleanup on cloudmgr module.

- Changed
- Fixed issue with cmds.SysCmdRunner keeping keys from last run.
- Fix expander.Expander.expand_file() failure when intermediate empty directories don't exist.
- expander.Expander.expand_directory() double recurses into directories.
- Pylint cleanup on expander module.

- Added
- Added build.DockerNodeProduct() and build.DockerDotNetCoreProduct().

- Changed
- Fix qbpy issues.
- Upgraded GitPython to 2.1.11.
- Upgraded setuptools to 40.0.0.