Adjusting for package_name in path

Changed component logic
Added test cases

ee/spec/frontend/packages/details/components/installation_spec.js

@@ -34,10 +34,6 @@ describe('PackageInstallation', () => {
     });
   }
 
-  beforeEach(() => {
-    createComponent();
-  });
-
   afterEach(() => {
     if (wrapper) wrapper.destroy();
   });