integration: Collect subject results

Add a playbook to pull down the integration and e2e testing
logs/xml.  By default they will appear in a 'artifacts' subdirectory
of wherever the ``results.yml`` playbook lives. If the ``$WORKSPACE``
env. var is set and non-empty, the subdirectory will be created
there instead.

Inside the ``artifacts`` directory, further sub-directories are created,
one for each subject's Ansible inventory name.  Within those
sub-directories are all the collected logs from that host.  In this way,
automation may simply archive the entire 'artifacts' directory to
capture the important log files.

(Depends on PR #935)

Signed-off-by: Chris Evich <cevich@redhat.com>

contrib/test/integration/e2e.yml

@@ -41,14 +41,18 @@
     path: "{{ artifacts }}"
     state: directory
 
+- name: Buffer the e2e testing command to workaround Ansible YAML folding "feature"
+  set_fact:
+    e2e_shell_cmd: >
+        go run hack/e2e.go
+            --test
+            -test_args="-host=https://{{ ansible_default_ipv4.address }}:6443
+                        --ginkgo.focus=\[Conformance\]
+                        --report-dir={{ artifacts }}"
+            &> {{ artifacts }}/e2e.log
+  # Fix vim syntax hilighting: "
+
 - name: run e2e tests
-  shell: >
-    go run hack/e2e.go \
-        --test \
-        -test_args="-host=https://{{ ansible_default_ipv4.address }}:6443 \
-                    --ginkgo.focus=\[Conformance\] \
-                    --report-dir={{ artifacts }}" \
-        &> {{ artifacts }}/e2e.log
-  # Fix " syntax hilighting
+  shell: "{{ e2e_shell_cmd | regex_replace('\\s+', ' ') }}"
   args:
     chdir: "{{ ansible_env.GOPATH }}/src/k8s.io/kubernetes"