Uninstall node_exporter when removing OSM stack

Change-Id: I71680b2924e307738742efb69173c883662a605a
Signed-off-by: lavado <glavado@whitestack.com>
diff --git a/installers/docker/docker-compose.yaml b/installers/docker/docker-compose.yaml
index 7070edd..340cb84 100644
--- a/installers/docker/docker-compose.yaml
+++ b/installers/docker/docker-compose.yaml
@@ -108,7 +108,7 @@
       - /var/lib/docker/:/var/lib/docker:ro
       - /dev/disk/:/dev/disk:ro
     networks:
-      - netOSM    
+      - netOSM
   keystone:
     image: ${DOCKER_USER:-opensourcemano}/keystone:${TAG:-6}
     networks: