Migrate Linux CI roles to test targets. (#17997)

test/integration/targets/embedded_module/library/test_integration_module

@@ -0,0 +1,3 @@
+#!/usr/bin/env python
+
+print('{"changed":false, "msg":"this is the embedded module"}')

test/integration/targets/embedded_module/tasks/main.yml

@@ -0,0 +1,9 @@
+- name: run the embedded dummy module
+  test_integration_module:
+  register: result
+
+- name: assert the embedded module ran
+  assert:
+    that:
+    - "'msg' in result"
+    - result.msg == "this is the embedded module"