ACUMOS: Improve jenkins jobs for Acumos projects

- Mirror branches from Acumos upstream project to Nordix.
- Do not force the git user.name to be the gerrit id.
  Git authorship can be independent from the
  gerrit review ownership now.
- Cache the repository on the Jenkins slave nodes
  when rebasing repositories.
- Make sure the commit hash in the local repo is the same
  as in nordix Gerrit and the same as the commit hash
  in the upstream gerrit.
- Decrease number of jobs required for project in Jenkins

Change-Id: I29ea8b9b2573b5d894246f47b537aeb61027f6f8
diff --git a/jjb/acumos/global-templates-acumos-push-upstream.yaml b/jjb/acumos/global-templates-acumos-push-upstream.yaml
index 2a31aaf..a0cf5b1 100644
--- a/jjb/acumos/global-templates-acumos-push-upstream.yaml
+++ b/jjb/acumos/global-templates-acumos-push-upstream.yaml
@@ -1,7 +1,7 @@
 - job-template:
-    name: 'acumos-{project-name}-{stream}-push-upstream'
+    name: 'acumos-{project-name}-push-upstream'
 
-    node: onap-ubuntu1604
+    node: infra-build01-ubuntu1804
 
     disabled: false
 
@@ -11,15 +11,16 @@
       - logrotate
 
     parameters:
-      - project-parameters:
-          project: 'acumos/{project}'
-          branch: '{branch}'
+      - string:
+          name: PROJECT
+          default: 'acumos/{project}'
+          description: JJB configured PROJECT parameter to identify a Nordix Gerrit project
       - nordix-gerrit-parameters
 
     scm:
       - git-scm-gerrit:
           ssh-credentials-id: nordixinfra-nordix-gerrit-ssh
-          branch: '{branch}'
+          branch: $GERRIT_BRANCH
           refspec: $GERRIT_REFSPEC
           wipe_workspace: true
           clean_before: false
@@ -27,7 +28,7 @@
     triggers:
       - nordix-gerrit-push-upstream:
           project: 'acumos/{project}'
-          branch: '{branch}'
+          branch: '**'
           files: '**'
 
     wrappers: