Zypper provider doesn't recognize --no-gpg-checks as global option

Puppet Version: 5.5.19**

Desired Behavior: When running the below code, it should recognize the following install option as a global option.

package { $foo:

ensure => installed,

install_options => ['--no-gpg-checks'],

}

Actual Behavior:

It appends the option to the end of the zypper command, and errors out when read as a sub-command option.

Workaround:

Using the --no-gpg-check variant (note the lack of an S at the end) is recognized as a global zypper option, relevant code here. This issue is closely related to PUP-4090.

A note on discoverability: The Zypper help output and manual only lists the "checks" variant of the option.