CB-7447 Add --globalplugins option to createmobilespec.js
CB-7447 Add --globalplugins option to createmobilespec.js

Add option to createmobilespec.js to use local platforms and tools, but use
released version of plugins. This is meant for running tests for a
platforms/tools release.

ollie314/cordova-mobile-spec,corimf/cordova-mobile-spec,ollie314/cordova-mobile-spec,corimf/cordova-mobile-spec,ollie314/cordova-mobile-spec,corimf/cordova-mobile-spec,apache/cordova-mobile-spec,ollie314/cordova-mobile-spec,corimf/cordova-mobile-spec,apache/cordova-mobile-spec,ollie314/cordova-mobile-spec,apache/cordova-mobile-spec,apache/cordova-mobile-spec,corimf/cordova-mobile-spec,apache/cordova-mobile-spec