Add executable option to cargo (#7352)

* Add `executable` option to cargo

Add `executable` option to cargo to make the module easier to use with
cargo installed by rustup.

* Add changelog fragment

* Add license to integration test

* Do not test on CentOS 6

CentOS 6 cannot even validate the certificate in https://sh.rustup.rs.

* Fix condition to skip tests on CentOS 6

* Add version_added to path

Co-authored-by: Felix Fontein <felix@fontein.de>

* Update plugins/modules/cargo.py

Co-authored-by: Felix Fontein <felix@fontein.de>

* shell → command

---------

Co-authored-by: Felix Fontein <felix@fontein.de>

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

@@ -18,3 +18,5 @@
   - import_tasks: test_version.yml
   environment: "{{ cargo_environment }}"
   when: has_cargo | default(false)
+- import_tasks: test_rustup_cargo.yml
+  when: rustup_cargo_bin | default(false)

tests/integration/targets/cargo/tasks/setup.yml

@@ -26,3 +26,17 @@
       has_cargo: true
   when:
     - ansible_system == 'FreeBSD' and ansible_distribution_version is version('13.0', '>')
+
+- block:
+  - name: Download rustup
+    get_url:
+      url: https://sh.rustup.rs
+      dest: /tmp/sh.rustup.rs
+      mode: "0750"
+      force: true
+  - name: Install rustup cargo
+    command: /tmp/sh.rustup.rs -y
+  - set_fact:
+      rustup_cargo_bin: "{{ lookup('env', 'HOME') }}/.cargo/bin/cargo"
+  when:
+    - ansible_distribution != 'CentOS' or ansible_distribution_version is version('7.0', '>=')

tests/integration/targets/cargo/tasks/test_rustup_cargo.yml

@@ -0,0 +1,23 @@
+---
+# Copyright (c) Ansible Project
+# GNU General Public License v3.0+ (see LICENSES/GPL-3.0-or-later.txt or https://www.gnu.org/licenses/gpl-3.0.txt)
+# SPDX-License-Identifier: GPL-3.0-or-later
+#
+- name: Install application helloworld
+  community.general.cargo:
+    executable: "{{ rustup_cargo_bin }}"
+    name: helloworld
+  register: rustup_install_absent_helloworld
+
+- name: Uninstall application helloworld
+  community.general.cargo:
+    executable: "{{ rustup_cargo_bin }}"
+    state: absent
+    name: helloworld
+  register: rustup_uninstall_present_helloworld
+
+- name: Check assertions helloworld
+  assert:
+    that:
+        - rustup_install_absent_helloworld is changed
+        - rustup_uninstall_present_helloworld is changed