Added executable parameter to the script module (#36969)

* Added interpreter parameter to the script module

* Let required and default parameters get documented implicitly for binary parameter

* Renamed interpreter parameter to executable

lib/ansible/modules/commands/script.py

@@ -40,6 +40,10 @@ options:
     description:
       - cd into this directory on the remote node before running the script
     version_added: "2.4"
+  executable:
+    description:
+      - Name or path of a executable to invoke the script with
+    version_added: "2.6"
 notes:
   - It is usually preferable to write Ansible modules than pushing scripts. Convert your script to an Ansible module for bonus points!
   - The ssh connection plugin will force pseudo-tty allocation via -tt when scripts are executed. pseudo-ttys do not have a stderr channel and all
@@ -66,4 +70,14 @@ EXAMPLES = '''
 - script: /some/local/remove_file.sh --some-arguments 1234
   args:
     removes: /the/removed/file.txt
+
+# Run a script using a executable in a non-system path
+- script: /some/local/script
+  args:
+    executable: /some/remote/executable
+
+# Run a script using a executable in a system path
+- script: /some/local/script.py
+  args:
+    executable: python3
 '''

lib/ansible/plugins/action/script.py

@@ -79,6 +79,9 @@ class ActionModule(ActionBase):
             parts = [to_text(s, errors='surrogate_or_strict') for s in shlex.split(raw_params.strip())]
             source = parts[0]
 
+            # Support executable paths and files with spaces in the name.
+            executable = to_native(self._task.args.get('executable', ''), errors='surrogate_or_strict')
+
             try:
                 source = self._loader.get_real_file(self._find_needle('files', source), decrypt=self._task.args.get('decrypt', True))
             except AnsibleError as e:
@@ -109,7 +112,11 @@ class ActionModule(ActionBase):
                 # add preparation steps to one ssh roundtrip executing the script
                 env_dict = dict()
                 env_string = self._compute_environment_string(env_dict)
-                script_cmd = ' '.join([env_string, target_command])
+
+                if executable:
+                    script_cmd = ' '.join([env_string, executable, target_command])
+                else:
+                    script_cmd = ' '.join([env_string, target_command])
 
             if self._play_context.check_mode:
                 raise _AnsibleActionDone()

test/integration/targets/script/files/no_shebang.py

@@ -0,0 +1,3 @@
+import sys
+
+sys.stdout.write("Script with shebang omitted")

test/integration/targets/script/tasks/main.yml

@@ -221,3 +221,21 @@
     that:
       - _check_mode_test3 is skipped
       - '_check_mode_test3.msg == "{{ output_dir_test | expanduser }}/afile2.txt does not exist, matching removes option"'
+
+# executable
+
+- name: Run script with shebang omitted
+  script: no_shebang.py
+  args:
+    executable: python
+  register: _shebang_omitted_test
+  tags:
+    - noshebang
+
+- name: Assert that script with shebang omitted succeeded
+  assert:
+    that:
+      - _shebang_omitted_test is success
+      - _shebang_omitted_test.stdout == 'Script with shebang omitted'
+  tags:
+    - noshebang