Merge pull request #1658 from eclipse/cd_xtext_issue1943

[eclipse-xtext/xtext#1943] prepare oomph for 2021-06

releng/org.eclipse.xtext.contributor/Xtext.setup

@@ -63,11 +63,14 @@
   <setupTask
       xsi:type="setup:VariableTask"
       name="eclipse.target.platform"
-      defaultValue="2020-12"
+      defaultValue="2021-06"
       storageURI="scope://Workspace"
       label="Target Platform">
     <annotation
         source="http://www.eclipse.org/oomph/setup/GlobalVariable"/>
+    <choice
+        value="2021-06"
+        label="Eclipse 2021-06 - 4.20"/>
     <choice
         value="2021-03"
         label="Eclipse 2021-03 - 4.19"/>
@@ -1310,7 +1313,42 @@
           <repository
               url="${p2.draw2d}"/>
           <repository
-              url="https://download.eclipse.org/eclipse/updates/4.19-I-builds"/>
+              url="${p2.xpand}"/>
+          <repository
+              url="${p2.buildship}"/>
+          <repository
+              url="${p2.webtools}"/>
+          <repository
+              url="${p2.lsp4j}"/>
+          <repository
+              url="${p2.cbi.analyzer}"/>
+          <repository
+              url="${p2.egit}"/>
+          <repository
+              url="${p2.license}"/>
+        </repositoryList>
+        <repositoryList
+            name="2021-06">
+          <repository
+              url="${p2.xtext}"/>
+          <repository
+              url="${p2.mwe2}"/>
+          <repository
+              url="${p2.antlr-gen}"/>
+          <repository
+              url="${p2.gef}"/>
+          <repository
+              url="${p2.m2e}/1.17.2"/>
+          <repository
+              url="${p2.swtbot}"/>
+          <repository
+              url="${p2.orbit}"/>
+          <repository
+              url="${p2.emf}"/>
+          <repository
+              url="${p2.draw2d}"/>
+          <repository
+              url="https://download.eclipse.org/eclipse/updates/4.20-I-builds"/>
           <repository
               url="${p2.xpand}"/>
           <repository