[PR #7352/0ca07b0b backport][stable-7] Add executable option to cargo (#7357)

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>
(cherry picked from commit 0ca07b0b05)

Co-authored-by: radek-sprta <mail@radeksprta.eu>

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', '>=')