Update installer URL in jenkins pipelines to use Rel18 URL

Change-Id: I162433504d47f4b85521fc42347290797eff5eaf
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>
diff --git a/jenkins/ci-pipelines/ci_stage_3.groovy b/jenkins/ci-pipelines/ci_stage_3.groovy
index 070eaaa..33cc159 100644
--- a/jenkins/ci-pipelines/ci_stage_3.groovy
+++ b/jenkins/ci-pipelines/ci_stage_3.groovy
@@ -705,7 +705,7 @@
                     ]
 
                     sshCommand remote: remote, command: '''
-                        wget https://osm-download.etsi.org/ftp/osm-16.0-sixteen/install_osm.sh
+                        wget https://osm-download.etsi.org/ftp/osm-18.0-eighteen/install_osm.sh
                         chmod +x ./install_osm.sh
                         sed -i '1 i\\export PATH=/snap/bin:\$PATH' ~/.bashrc
                     '''
diff --git a/jenkins/public-clouds-tests/Jenkinsfile b/jenkins/public-clouds-tests/Jenkinsfile
index a65f5c1..5739d08 100644
--- a/jenkins/public-clouds-tests/Jenkinsfile
+++ b/jenkins/public-clouds-tests/Jenkinsfile
@@ -21,7 +21,7 @@
 
         // Parameters to define the specific OSM version to test
         // --> Defaults to latest stable version of Release FOURTEEN
-        string(defaultValue: 'https://osm-download.etsi.org/ftp/osm-16.0-sixteen/install_osm.sh', description: 'URL to OSM installer', name: 'INSTALLER_URL')
+        string(defaultValue: 'https://osm-download.etsi.org/ftp/osm-18.0-eighteen/install_osm.sh', description: 'URL to OSM installer', name: 'INSTALLER_URL')
         string(defaultValue: 'testing-daily', description: 'Release for OSM binaries (REPO_BASE)', name: 'REPO_BASE')
         string(defaultValue: 'testing-daily', description: 'OSM docker tag (DOCKER_TAG)', name: 'DOCKER_TAG')
         string(defaultValue: 'testing', description: 'Repository name for OSM packages (REPO_NAME)', name: 'REPO_NAME')