Introduce content argument

Copy module can take content argument, I think we should introduce this
feature to config_template. It brings the possibility to use lookups for
inline passing of content to template.

Example, we could use:

config_template:
  content: "{{ lookup('file',<file>) }}" to replace current behavior

or:

config_template:
  content: "{{ lookup('url','<url>',wantlist=True) | join ('\n') }}"

to bring inline templating of external sources.

Change-Id: Id5b2743d309f0313603afbbf84279ce0b1e49cfb
Signed-off-by: Jean-Philippe Evrard <jean-philippe.evrard@rackspace.co.uk>

action/_v2_config_template.py

@@ -427,11 +427,25 @@ class ActionModule(ActionBase):
             file_path = self._loader.get_basedir()
 
         user_source = self._task.args.get('src')
+        user_content = self._task.args.get('content')
         if not user_source:
-            return False, dict(
-                failed=True,
-                msg="No user provided [ src ] was provided"
-            )
+            if not user_content:
+                return False, dict(
+                    failed=True,
+                    msg="No user [ src ] or [ content ] was provided"
+                )
+            else:
+                tmp_content = None
+                try:
+                    remote_user = task_vars.get('ansible_user') or self._play_context.remote_user
+                    if not tmp_content:
+                        tmp_content = self._make_tmp_path(remote_user) + 'content'
+                except TypeError:
+                    if not tmp_content:
+                        tmp_content = self._make_tmp_path() + 'content'
+                with open(tmp_content, 'w') as f:
+                    f.writelines(user_content)
+                user_source = tmp_content
         source = self._loader.path_dwim_relative(
             file_path,
             'templates',

tests/test-config_template.yml

@@ -38,6 +38,26 @@
           - "(lookup('ini', 'new_key section=DEFAULT file=/tmp/test.ini')) == 'new_value'"
           - "(lookup('ini', 'baz section=foo file=/tmp/test.ini')) == 'bar'"
 
+    # Test basic function of config_template with content instead of src
+    - name: Template test INI template
+      config_template:
+        content: "{{ lookup('file', playbook_dir + '/templates/test.ini') }}"
+        dest: "/tmp/test_with_content.ini"
+        config_overrides: "{{ test_config_ini_overrides }}"
+        config_type: "ini"
+
+    - name: Read test.ini
+      slurp:
+        src: /tmp/test_with_content.ini
+      register: ini_file_with_content
+    - debug:
+        msg: "ini - {{ ini_file_with_content.content | b64decode }}"
+    - name: Validate output
+      assert:
+        that:
+          - "(lookup('ini', 'new_key section=DEFAULT file=/tmp/test_with_content.ini')) == 'new_value'"
+          - "(lookup('ini', 'baz section=foo file=/tmp/test_with_content.ini')) == 'bar'"
+
     # Test list additions in config_template
     - name: Template test YML template
       config_template:
@@ -96,4 +116,4 @@
         baz: "bar"
     test_config_yml_overrides:
       list_one:
-        - four
+        - four