Removed mysql-server dependency, updates postinst with the appropriate service name

Change-Id: I0b6a094c1f7db89e1918bf637480305c60e574a1
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>
diff --git a/scripts/python-osm-ro.postinst b/scripts/python-osm-ro.postinst
index f04a94c..d697afe 100755
--- a/scripts/python-osm-ro.postinst
+++ b/scripts/python-osm-ro.postinst
@@ -42,8 +42,8 @@
 fi
 
 echo '
-To make OSM RO work, you have to install mysql and a database, and finally start openmano service'
+To make OSM RO work, you have to install mysql and a database, and finally start osm-ro service'
 echo "     ${OSMRO_PATH}/database_utils/install-db-server.sh # -h for help"
-echo '     service openmano start'
+echo '     service osm-ro start'