fix(reproducer): Use controller-0's path when checking for requirements

Previously, the check for `common-requirements.txt` would check if
common requirements exists on localhost at a given path. This path is
based on the home directory on localhost.
If the file did exist, it would use that same path to try to install the
requirements on controller-0. This causes issues when localhost and
controller-0 do not have the same users and home directories.

Author: michburk

roles/reproducer/tasks/configure_controller.yml

@@ -365,11 +365,10 @@
         - cifmw_reproducer_src_dir_stat.stat.exists
         - cifmw_reproducer_src_dir_stat.stat.isdir
 
-    - name: Check if local common-requirements.txt exists
-      delegate_to: localhost
+    - name: Check if common-requirements.txt exists on controller-0
       ansible.builtin.stat:
-        path: "{{ cifmw_reproducer_src_dir }}/github.com/openstack-k8s-operators/ci-framework/common-requirements.txt"
-      register: _local_common_requirements_check
+        path: "{{ cifmw_reproducer_controller0_user_dir }}/src/github.com/openstack-k8s-operators/ci-framework/common-requirements.txt"
+      register: _controller_common_requirements_check
       run_once: true
       ignore_errors: true
 
@@ -380,8 +379,8 @@
       ansible.builtin.pip:
         requirements: "{{ have_local | ternary(local, remote) }}"
       vars:
-        have_local: "{{ _local_common_requirements_check.stat is defined and _local_common_requirements_check.stat.exists }}"
-        local: "{{ cifmw_reproducer_src_dir }}/github.com/openstack-k8s-operators/ci-framework/common-requirements.txt"
+        have_local: "{{ _controller_common_requirements_check.stat is defined and _controller_common_requirements_check.stat.exists }}"
+        local: "{{ cifmw_reproducer_controller0_user_dir }}/src/github.com/openstack-k8s-operators/ci-framework/common-requirements.txt"
         remote: https://raw.githubusercontent.com/openstack-k8s-operators/ci-framework/main/common-requirements.txt
 
     - name: Inject most of the cifmw_ parameters passed to the reproducer run