[shiftstack]Enable the option to run the role isolated

In order to allow users to run the shiftsatck role without being part of
the whole reproducer, below changes are needed:

- Add missing kubeconfig param
- Load .bashrc whle running the ansible-navigator. That's needed
for reading the envvars that will be used for writting the junit report.
- Enable the option to exclude artifacts to be gathered.

roles/shiftstack/defaults/main.yml

@@ -34,4 +34,5 @@ cifmw_shiftstack_qa_repo: "https://review.gerrithub.io/shiftstack/shiftstack-qa"
 cifmw_shiftstack_run_playbook: "ocp_testing.yaml"
 cifmw_shiftstack_sc: "local-storage"
 cifmw_shiftstack_shiftstackclient_artifacts_dir: "/home/cloud-admin/artifacts"
+cifmw_shiftstack_exclude_artifacts_regex: "openshift-install"
 cifmw_shiftstack_shiftstackclient_installation_dir: "{{ cifmw_shiftstack_shiftstackclient_artifacts_dir }}/installation"

roles/shiftstack/tasks/pre_test_shiftstack.yml

@@ -21,6 +21,7 @@
 
 - name: Remove the shiftstackclient pod if exists
   kubernetes.core.k8s:
+    kubeconfig: "{{ cifmw_openshift_kubeconfig }}"
     state: absent
     api_version: v1
     kind: Pod

roles/shiftstack/tasks/test_config.yml

@@ -31,6 +31,7 @@
         namespace: "{{ cifmw_shiftstack_client_pod_namespace }}"
         pod_name: "{{ cifmw_shiftstack_client_pod_name }}"
         command: >-
+          source .bashrc &&
           cd shiftstack-qa &&
           ansible-navigator run playbooks/{{ cifmw_shiftstack_run_playbook }} -e @jobs_definitions/{{ testconfig }} -e ocp_cluster_name={{ cifmw_shiftstack_cluster_name }} -e user_cloud={{ cifmw_shiftstack_project_name }}
       ansible.builtin.include_tasks: exec_command_in_pod.yml
@@ -53,7 +54,7 @@
         KUBECONFIG: "{{ cifmw_openshift_kubeconfig }}"
       ansible.builtin.command:
         cmd: >
-          oc rsync -n {{ cifmw_shiftstack_client_pod_namespace }}
+          oc rsync -n {{ cifmw_shiftstack_client_pod_namespace }} --exclude={{ cifmw_shiftstack_exclude_artifacts_regex }}
           {{ cifmw_shiftstack_client_pod_name }}:{{ cifmw_shiftstack_shiftstackclient_artifacts_dir }}/
           {{ testconfig_artifacts_dir }}/
       failed_when: false