Add coverage reports to py27/35/36 unit test jobs

...and drop openstack-cover-jobs since it is no longer necessary.

Change-Id: Iad12e64f41bbdd8b8e005b0fb14a7e2108fa3bcf

.zuul.yaml

@@ -22,6 +22,10 @@
       tools/test-setup.sh.
     vars:
       tox_envlist: py27
+      tox_environment:
+        NOSE_COVER_HTML: 1
+        NOSE_COVER_HTML_DIR: '{toxinidir}/cover'
+    post-run: tools/playbooks/common/cover-post.yaml
 
 - job:
     name: swift-tox-py27-centos-7
@@ -40,6 +44,10 @@
     vars:
       tox_envlist: py35
       bindep_profile: test py35
+      tox_environment:
+        NOSE_COVER_HTML: 1
+        NOSE_COVER_HTML_DIR: '{toxinidir}/cover'
+    post-run: tools/playbooks/common/cover-post.yaml
 
 - job:
     name: swift-tox-py36
@@ -54,6 +62,10 @@
     vars:
       tox_envlist: py36
       bindep_profile: test py36
+      tox_environment:
+        NOSE_COVER_HTML: 1
+        NOSE_COVER_HTML_DIR: '{toxinidir}/cover'
+    post-run: tools/playbooks/common/cover-post.yaml
 
 - job:
     name: swift-tox-func
@@ -275,7 +287,6 @@
 
 - project:
     templates:
-      - openstack-cover-jobs
       - publish-openstack-docs-pti
       - periodic-stable-jobs
       - check-requirements

tools/playbooks/common/cover-post.yaml

@@ -0,0 +1,3 @@
+- hosts: all
+  roles:
+    - role: fetch-coverage-output