Merge pull request #144 from yves-vogl/master

Added support for external authentication (e.g. ActiveDirectory via sss)
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Update subproject
adding spec for existing detect_os logic
adding port number as part of the key to cache os property when connecting to different hosts
Merge pull request #146 from smontanari/cache-os-based-on-host-and-port

Cache os based on host and port
Add check_mysql method

This small change adds a new check_mysql method to validate MySQL
credentials.
Bump up version
Merge pull request #147 from mattt416/add_check_mysql

Add check_mysql method
Bump up version
Revert subproject
Provide ability to check immutable attribute on files
Merge pull request #148 from jonnangle/immutable_file_attribute

Provide ability to check immutable attribute on files
Bump up version
Revert "Add check_mysql method"

This reverts commit 4d156b4900ceb833fba9745ea3f6887588007d9c.
Merge pull request #150 from mattt416/revert_check_mysql

Revert "Add check_mysql method"
Bump up version
Add check_primary_group feature
Add check_primary_group feature
Merge pull request #151 from ifor2u/check_primary_group-feature

Add check_primary_group method on command