title: how to add sample run mode for package installation
body: <p>I want to install a package (mypackage-1.0-local.zip) only for local environment. This package should not be installed in any other environments.Same as OOTB 'samplecontent'/'nosamplecontent' runmodes.
  So for this I do not know how to achieve this. If I start AEM server with 'local' runmode then how package manager service will know whether to install this package or not based on runmode?</p>