fix: import testbed plugin from npm then override with local
fix: import testbed plugin from npm then override with local

BranchMetrics/cordova-ionic-phonegap-branch-deep-linking,BranchMetrics/cordova-ionic-phonegap-branch-deep-linking,BranchMetrics/cordova-ionic-phonegap-branch-deep-linking,BranchMetrics/cordova-ionic-phonegap-branch-deep-linking,BranchMetrics/cordova-ionic-phonegap-branch-deep-linking,BranchMetrics/Cordova-Ionic-PhoneGap-Deferred-Deep-Linking-SDK,BranchMetrics/Cordova-Ionic-PhoneGap-Deferred-Deep-Linking-SDK,BranchMetrics/Cordova-Ionic-PhoneGap-Deferred-Deep-Linking-SDK,BranchMetrics/Cordova-Ionic-PhoneGap-Deferred-Deep-Linking-SDK