ansible-lint: Silence shell warnings

Silence remaing two ansible warnings: Since we cannot really test this
change currently, add a TODO and silence the warning.

The change to command module can be done later, let's move forward
to get the job voting.

Change-Id: I01d22702f3294d7958c8982dc7f2c31a02aa81e2

roles/build-wheels/tasks/main.yaml

@@ -14,3 +14,7 @@
   shell:
     cmd: ./scripts/wheel-build.sh {{ wheel_dir }} {{ wheel_python }}
     executable: /bin/bash
+  # ANSIBLE0013 complains about shell. TODO(jaegerandi): Use command instead,
+  # for now we just silence the warning.
+  tags:
+    - skip_ansible_lint

roles/legacy-install-afs-with-puppet/tasks/main.yaml

@@ -6,6 +6,10 @@
     # Skip setting up pip, our images have already done this.
     SETUP_PIP: "false"
   become: yes
+  # ANSIBLE0013 complains about shell. TODO(jaegerandi): Use command instead,
+  # for now we just silence the warning.
+  tags:
+    - skip_ansible_lint
 
 - name: Copy reduced scope modules.env into place
   template: