Add secret-management in Charmed OSM

Change-Id: Ic5714571c673e4d82e3a905daa57f631640b94bb
Signed-off-by: David Garcia <david.garcia@canonical.com>
diff --git a/installers/charm/keystone/tests/test_charm.py b/installers/charm/keystone/tests/test_charm.py
index e281b20..2a95029 100644
--- a/installers/charm/keystone/tests/test_charm.py
+++ b/installers/charm/keystone/tests/test_charm.py
@@ -110,13 +110,7 @@
         self.assertIsInstance(self.harness.charm.unit.status, BlockedStatus)
 
     def initialize_mysql_config(self):
-        self.harness.update_config(
-            {
-                "mysql_host": "mysql",
-                "mysql_port": 3306,
-                "mysql_root_password": "manopw",
-            }
-        )
+        self.harness.update_config({"mysql_uri": "mysql://root:manopw@mysql:3306/"})
 
     def initialize_mysql_relation(self):
         relation_id = self.harness.add_relation("db", "mysql")