ansible_galaxy_install: new param executable (#11646)

* ansible_galaxy_install: new param executable

* add changelog frag

tests/integration/targets/ansible_galaxy_install/tasks/main.yml

@@ -141,3 +141,43 @@
     that:
       - upgrade_c1 is changed
       - upgrade_c2 is not changed
+
+###################################################
+- name: Find ansible-galaxy executable path
+  ansible.builtin.command: which ansible-galaxy
+  register: galaxy_which
+  changed_when: false
+
+- name: Make directory exec_c
+  ansible.builtin.file:
+    path: "{{ remote_tmp_dir }}/exec_c"
+    state: directory
+
+- name: Install collection using explicit executable path
+  community.general.ansible_galaxy_install:
+    type: collection
+    name: netbox.netbox
+    dest: "{{ remote_tmp_dir }}/exec_c"
+    executable: "{{ galaxy_which.stdout }}"
+  register: exec_c0
+
+- name: Assert collection was installed using explicit executable
+  assert:
+    that:
+      - exec_c0 is changed
+      - '"netbox.netbox" in exec_c0.new_collections'
+      - exec_c0.executable == galaxy_which.stdout
+
+- name: Fail to install collection using bad executable path
+  community.general.ansible_galaxy_install:
+    type: collection
+    name: netbox.netbox
+    dest: "{{ remote_tmp_dir }}/exec_c"
+    executable: /nonexistent/ansible-galaxy
+  register: exec_c_fail
+  ignore_errors: true
+
+- name: Assert bad executable caused failure
+  assert:
+    that:
+      - exec_c_fail is failed