(#21260) Add Cumulus Linux OS detection support
collapsed in a parsable symbol
Per pull request #453, don't match an array when a single OS string is matched
liberal regex
Spec for Cumulus Linux
Per Adrien feedback, an explicit check and return value
Merge pull request #1 from sergeyhush/master

Cumulus Linux RSpec additions
preserve agressive regex to match other setcodes, also explicit variable
(#21260) Add Cumulus Linux OS detection support

If '/etc/os-release' is presend and it claims to be Cumulus Linux, set operating system to CumulusLInux.
Merge pull request #493 from CumulusNetworks/cl_os_resolution

Cumulus Linux os resolution