pluginExcludes aren't supported in in-place plugins

pluginExcludes is currently only used in package-plugin. pluginExcludes should also be supported with in-place plugins that are included with grails.project.plugins.dir or grails.plugin.location.'pluginname' setting.

Currently we have tests and configuration in the plugin project to run unit and integration tests for the plugin alone. When we include the plugin to some other project by using the grails.project.plugins.dir or grails.plugin.location.'pluginname' setting, the pluginExcludes are ignored.

This is the pluginExcludes setting we are using:

   
    def pluginExcludes = [
            "grails-app/views/error.gsp", "grails-app/conf/spring/*", "grails-app/conf/*"
    ]