[run_tests.sh] Add module_utils path

[lolyu]

Description of PR

For Pytest, we need to let pytest-ansible aware of the module_utils
path.

Signed-off-by: Longxiang Lyu [email protected]

Summary:
Fixes # (issue)

Type of change

• Bug fix
• Testbed and Framework(new/improvement)
• Test case(new/improvement)

Approach

What is the motivation for this PR?

• Pytest conn_graph_facts fixture failed with error:

>           raise RunAnsibleModuleFail("run module {} failed".format(self.module_name), res)
E           RunAnsibleModuleFail: run module conn_graph_facts failed, Ansible Results =>
E           {
E               "failed": true,
E               "msg": "Could not find imported module support code for conn_graph_facts.  Looked for either print_debug_msg.py or debug_utils.py"
E           }

How did you do it?

Add the environment variable ANSIBLE_MODULE_UTILS to the test runner script.

How did you verify/test it?

Run Pytest.

Any platform specific information?

Supported testbed topology if it's a new test case?

Documentation