Temporarily added 4.21 to open folder in order to run the release build

open/gcube-4.21.0.yaml

@@ -0,0 +1,99 @@
+#Release gCube 4.21.0
+
+gCube_release:
+  Version: 4.21.0
+  Components:
+  
+    NoDeps:
+      - name: gcube-bom
+        version: 1.5.0
+      - name: gcube-smartgears-bom
+        version: 1.2.0
+      - name: information-system-bom
+        version: 1.5.0   
+       
+    Enabling:
+      - name: authorization-client
+        version: 2.0.7
+            
+    RRModel:
+      - name: information-system-model
+        version: 3.0.0         
+
+    RRCore:
+      - name: gcube-model
+        version: 2.0.0
+      - name: resource-registry-api
+        version: 3.0.0
+      - name: resource-registry-orientdb-hooks
+        version: 2.0.0
+
+        
+    RRClient:
+      - name: resource-registry-client
+        version: 3.0.0
+      - name: resource-registry-context-client  
+        version: 3.0.0
+        
+    RREnablingLibs:
+      - name: resource-registry-schema-client
+        version: 3.0.0    
+      - name: resource-registry-publisher
+        version: 3.0.0
+        
+    RRLibraries:
+      - name: resource-registry-handlers
+        version: 1.3.0
+          
+    Libraries:
+      - name: storagehub-client-library
+        version: 1.1.0
+      - name: social-networking-library
+        version: 1.16.2
+        
+    PortalLibraries:
+      - name: storagehub-client-wrapper
+        version: 0.6.2
+      - name: aslsocial
+        version: 1.7.3  
+        
+    Plugins:
+      - name: accounting-dashboard-harvester-se-plugin
+        version: 1.5.0   
+      - name: sh-fuse-integration
+        version: 1.0.2  
+            
+    Services:
+      - name: grsf-publisher-ws
+        version: 1.11.0
+      - name: storagehub
+        version: 1.1.0  
+      - name: resource-registry
+        version: 3.0.0  
+      - name: authorization-service
+        version: 2.1.1        
+        
+    Widgets:
+      - name: workspace-widget-portlet
+        version: 1.4.0
+      - name: workspace-tree-widget
+        version: 6.29.0  
+            
+    Portlets:
+      - name: trending-topics
+        version: 3.0.0
+      - name: workspace
+        version: 6.23.1  
+      - name: news-feed
+        version: 2.8.3  
+      - name: social-mail-servlet
+        version: 2.4.0  
+     
+    Distribution:
+      - name: gcube-portal-bundle
+        version: 4.7.0       
+      - name: smartgears-distribution
+        version: 2.5.1
+      - name: smartgears-distribution-bundle
+        version: 2.5.1     
+