Changing access method of NBI in NG-UI charm for Charmed OSM

Change-Id: I6f9571d3dc219cc44b3c1c4f5ad9460b03eeb250
Signed-off-by: Guillermo Calvino <guillermo.calvino@canonical.com>
diff --git a/installers/charm/osm-ng-ui/src/charm.py b/installers/charm/osm-ng-ui/src/charm.py
index f74fe0b..235461f 100755
--- a/installers/charm/osm-ng-ui/src/charm.py
+++ b/installers/charm/osm-ng-ui/src/charm.py
@@ -214,7 +214,7 @@
         )
         default_site_config = re.sub(
             "proxy_pass .*\n",
-            f"proxy_pass https://{self.nbi.host}:{self.nbi.port};\n",
+            f"proxy_pass http://{self.nbi.host}:{self.nbi.port};\n",
             default_site_config,
         )
         container.push("/etc/nginx/sites-available/default", default_site_config)