add gCube 5.15.2

open/gcube-5.15.2.yaml

@@ -0,0 +1,27 @@
+#Release gCube 5.15.2
+        
+gCube_release:
+  Version: 5.15.2
+  Components:
+
+     NoDeps:
+       - name: maven-portal-bom
+         version: 3.7.0   
+   
+     Libraries:
+       - name: uri-resolver-manager
+         version: 1.7.0
+
+     PortalLibraries:
+       - name: storagehub-client-wrapper
+         version: 1.2.1
+
+     Services:
+       - name: uri-resolver
+         version: 2.9.0 
+      
+     Portlets:
+       - name: workspace
+         version: 6.29.0
+       - name: my-vres
+         version: 2.6.1