OSM_HOSTNAME set to 127.0.0.1 instead of localhost to fix issues detected in some environments

Change-Id: I5769e887bd4e50af27b6c7d2c458efd11948e39c
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>
diff --git a/installers/full_install_osm.sh b/installers/full_install_osm.sh
index 596beb0..8a3e312 100755
--- a/installers/full_install_osm.sh
+++ b/installers/full_install_osm.sh
@@ -462,7 +462,7 @@
     #echo 'export OSM_SOL005=True' >> ${HOME}/.bashrc
     [ -z "$INSTALL_LIGHTWEIGHT" ] && export OSM_HOSTNAME=`lxc list | awk '($2=="SO-ub"){print $6}'`
     [ -z "$INSTALL_LIGHTWEIGHT" ] && export OSM_RO_HOSTNAME=`lxc list | awk '($2=="RO"){print $6}'`
-    [ -n "$INSTALL_LIGHTWEIGHT" ] && export OSM_HOSTNAME=localhost
+    [ -n "$INSTALL_LIGHTWEIGHT" ] && export OSM_HOSTNAME=127.0.0.1
     echo -e "\nOSM client installed"
     echo -e "You might be interested in adding the following OSM client env variables to your .bashrc file:"
     echo "     export OSM_HOSTNAME=${OSM_HOSTNAME}"