Package support for the dummy proxy used by the test suite
Returns a string representing the package version or an empty string if not installed. If more than one package name is specified, a dict of name/version pairs is returned.
CLI Example:
salt '*' pkg.version <package name>
salt '*' pkg.version <package1> <package2> <package3> ...
Docs for previous releases are available on readthedocs.org.
Latest Salt release: 3004