Added plugin dependency to eclipse ui from java.test

test-plugins/org.yakindu.sct.generator.java.test/META-INF/MANIFEST.MF

@@ -11,4 +11,5 @@ Require-Bundle: org.yakindu.sct.generator.java;bundle-version="1.0.0",
  org.eclipse.xtext.junit4;bundle-version="2.0.1",
  org.yakindu.sct.generator.genmodel;bundle-version="1.0.0",
  org.eclipse.jdt.core;bundle-version="3.7.3",
- org.yakindu.sct.test.models;bundle-version="1.0.0"
+ org.yakindu.sct.test.models;bundle-version="1.0.0",
+ org.eclipse.ui;bundle-version="3.7.0"