fix: update JJBB with proper values (elastic#1093)

* fix(jjb): use proper folder

* chore: remove parameter

* fix: wrong repo

.ci/jobs/build-docker-images.yml

@@ -1,27 +1,22 @@
 ---
 - job:
-    name: Beats/build-docker-images
+    name: e2e-tests/build-docker-images
     display-name: E2E Tests Docker images
     description: Job to pre-build docker images used in E2E tests.
     view: Beats
     project-type: pipeline
-    parameters:
-      - string:
-          name: BRANCH_REFERENCE
-          default: master
-          description: the Git branch specifier
     pipeline-scm:
       script-path: .ci/build-docker-images.groovy
       scm:
         - git:
-            url: git@github.com:elastic/e2e-testint.git
+            url: git@github.com:elastic/e2e-testing.git
             refspec: +refs/heads/*:refs/remotes/origin/*
             wipe-workspace: true
             name: origin
             shallow-clone: true
             credentials-id: f6c7695a-671e-4f4f-a331-acdce44ff9ba
             reference-repo: /var/lib/jenkins/.git-references/e2e-testing.git
             branches:
-              - $BRANCH_REFERENCE
+              - master
     triggers:
       - timed: 'H H(0-5) * * 1-5'