Fix failing sanity and integration tests (#7807)

* Remove some Shippable specific code that trips latest shellcheck.

* Rename templated shell script to .sh.j2 to avoid shellcheck disliking the templating.

* Copy on the remote, not from controller to remote.

tests/integration/targets/cmd_runner/tasks/test_cmd_echo.yml

@@ -7,7 +7,8 @@
   ansible.builtin.copy:
     src: /bin/echo
     dest: "{{ item.copy_to }}/echo"
-    mode: "755"
+    mode: "0755"
+    remote_src: true
   when: item.copy_to is defined
 
 - name: test cmd_echo module ({{ item.name }})