Fix bug with SA08 when updating prometheus.yaml

Change-Id: Iae87ea4bfe66ae38653307b992c6eaea3cc2b4c4
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>
diff --git a/osm_lcm/lcm.cfg b/osm_lcm/lcm.cfg
index 96fb373..d8013a3 100644
--- a/osm_lcm/lcm.cfg
+++ b/osm_lcm/lcm.cfg
@@ -92,7 +92,7 @@
 tsdb:    # time series database
     driver:   prometheus
     # local file to store the configuration
-    path:     /etc/prometheus
+    path:     /opt/prometheus
     uri:      http://prometheus:9090/
     # loglevel: DEBUG
     # logfile:  /var/log/osm/lcm-tsdb.log