Revert "Disable new git tests until a fix for rhel6/7 is merged."

This reverts commit 197d3dfe97.

test/integration/roles/test_git/tasks/main.yml

@@ -596,22 +596,17 @@
     depth: 1
     version: master
 
-### Commented out while @robinro figures out the best fix to the git module.
-### Probably going to disable depth for this operation when on older vresions
-### of git to address it (of what we test, currently only rhel6/7 are broken
-### (fedora and ubuntu12+ work)
-
-#- name: switch to older branch with depth=1 (uses fetch)
-#  git:
-#    repo: '{{ repo_depth_url }}'
-#    dest: '{{ checkout_dir }}'
-#    depth: 1
-#    version: earlybranch
-#  register: git_fetch
-#
-#- name: ensure the fetch succeeded
-#  assert:
-#    that: git_fetch|success
+- name: switch to older branch with depth=1 (uses fetch)
+  git:
+    repo: '{{ repo_depth_url }}'
+    dest: '{{ checkout_dir }}'
+    depth: 1
+    version: earlybranch
+  register: git_fetch
+
+- name: ensure the fetch succeeded
+  assert:
+    that: git_fetch|success
 
 - name: clear checkout_dir
   file: state=absent path={{ checkout_dir }}