Remove tempest-dsvm-test-accounts-src from lib-forward-testing

In zuul/layout.yaml we only use
gate-tempest-dsvm-test-accounts-src-tempest-lib, no need to define
this job for an extra 45 repositories. Remove it from
lib-forward-testing and move it to tempest-lib.

Change-Id: Idc2da1037fc2b67e77838f826b020d8edff6e8e3

jenkins/jobs/projects.yaml

@@ -7855,6 +7855,11 @@
       - openstack-publish-jobs
       - pypi-jobs
       - 'lib-forward-testing-{name}'
+      - '{pipeline}-tempest-dsvm-test-accounts-src-{name}{job-suffix}':
+          pipeline: gate
+          node: devstack-trusty
+          job-suffix: ''
+          branch-override: default
 
 - project:
     name: terracotta

jenkins/jobs/tempest-jobs.yaml

@@ -6,11 +6,6 @@
           node: devstack-trusty
           job-suffix: ''
           branch-override: default
-      - '{pipeline}-tempest-dsvm-test-accounts-src-{name}{job-suffix}':
-          pipeline: gate
-          node: devstack-trusty
-          job-suffix: ''
-          branch-override: default
 
 - job-group:
     name: 'stable-compat-jobs-{name}'