raw now returns changed: true (#17112)

for consistency w/ shell/command/script "non-idempotent" modules.

Updated tests, changelog.

test/integration/test_connection.yml

@@ -9,7 +9,10 @@
     raw: echo 汉语
     register: command
   - name: check output of raw with unicode arg and output
-    assert: { that: "'汉语' in command.stdout" }
+    assert:
+      that:
+      - "'汉语' in command.stdout"
+      - command | changed # as of 2.2, raw should default to changed: true for consistency w/ shell/command/script modules
 
   ### copy local file with unicode filename and content