fixing azure 4.0.0 version

Change-Id: I77bc9140ed3269a5e9661852a3af23168e32a38c
Signed-off-by: tierno <alfonso.tiernosepulveda@telefonica.com>
diff --git a/RO-VIM-azure/debian/python3-osm-rovim-azure.postinst b/RO-VIM-azure/debian/python3-osm-rovim-azure.postinst
index ebb69b1..20b0f84 100755
--- a/RO-VIM-azure/debian/python3-osm-rovim-azure.postinst
+++ b/RO-VIM-azure/debian/python3-osm-rovim-azure.postinst
@@ -20,5 +20,5 @@
 echo "POST INSTALL OSM-ROVIM-AZURE"
 
 #Pip packages required for azure connector
-python3 -m pip install azure
+python3 -m pip install azure==4.0.0