[440013] JUnit failures in CBI Build R3_6_Maintenance - add xml.ui dependency

tests/org.eclipse.wst.sse.ui.tests/pom.xml

diff --git a/tests/org.eclipse.wst.sse.ui.tests/pom.xml b/tests/org.eclipse.wst.sse.ui.tests/pom.xml
index 1618ba2..4204e90 100644
--- a/tests/org.eclipse.wst.sse.ui.tests/pom.xml
+++ b/tests/org.eclipse.wst.sse.ui.tests/pom.xml
@@ -50,6 +50,11 @@
               <artifactId>org.eclipse.wst.xml.core</artifactId>
               <version>0.0.0</version>
             </dependency>
+            <dependency>
+              <type>p2-installable-unit</type>
+              <artifactId>org.eclipse.wst.xml.ui</artifactId>
+              <version>0.0.0</version>
+            </dependency>
           </dependencies>
         </configuration>
       </plugin>