add XSL to WTP build

assembly/features/org.eclipse.wst.feature/feature.xml

@@ -40,6 +40,10 @@
          id="org.eclipse.wst.server_adapters.feature"
          version="0.0.0"/>
 
+   <includes
+         id="org.eclipse.wst.xsl.feature"
+         version="0.0.0"/>
+
    <plugin
          id="org.eclipse.wst"
          download-size="0"

assembly/features/org.eclipse.wst.sdk/feature.xml

@@ -40,6 +40,10 @@
          id="org.eclipse.wst.web_sdk.feature"
          version="0.0.0"/>
 
+   <includes
+         id="org.eclipse.wst.xsl_sdk.feature"
+         version="0.0.0"/>
+
    <plugin
          id="org.eclipse.wst"
          download-size="0"

assembly/features/org.eclipse.wst.tests.feature/feature.xml

@@ -42,4 +42,8 @@
          id="org.eclipse.wst.jsdt_tests.feature"
          version="0.0.0"/>
 
+   <includes
+         id="org.eclipse.wst.xsl_tests.feature"
+         version="0.0.0"/>
+
 </feature>