Update Jenkinsfile

There were some changes in the insights-frontend-build-common that we
were missing.

.travis/Jenkinsfile

@@ -10,7 +10,7 @@ node {
                       passphraseVariable: "",
                       usernameVariable: "")]) {
 
-      String APP_NAME = "image-builder"
+      String APP_NAME = "__APP_NAME__"
       String BRANCH = env.BRANCH_NAME.replaceAll("origin/", "")
 
       if (BRANCH == "prod-stable") {
@@ -40,21 +40,18 @@ node {
       AKAMAI_BASE_PATH = "822386"
       AKAMAI_APP_PATH = "/${AKAMAI_BASE_PATH}/${PREFIX}apps/${APP_NAME}"
 
-      configFileProvider([configFile(fileId: "9f0c91bc-4feb-4076-9f3e-13da94ff3cef", variable: "AKAMAI_HOST_KEY")]) {
-        sh """
+      sh """
            eval `ssh-agent`
            ssh-add \"$privateKeyFile\"
-           cp $AKAMAI_HOST_KEY ~/.ssh/known_hosts
            chmod 600 ~/.ssh/known_hosts ~/.ssh/config
            n=0
            until [ \$n -ge 10 ]
            do
-              rsync -arv -e \"ssh -2\" --delete-after * sshacs@cloud-unprotected.upload.akamai.com:${AKAMAI_APP_PATH} && break
+              rsync -arv -e \"ssh -2 -o StrictHostKeyChecking=no\" * sshacs@cloud-unprotected.upload.akamai.com:${AKAMAI_APP_PATH} && break
               n=\$[\$n+1]
               sleep 10
            done
-         """
-      }
+      """
       
       //Clear the cache for the app being deployed
       openShiftUtils.withJnlpNode(