Using correct content type (as per version 10 of ACME draft). (#37165) (#37190)

* Using correct content type (as per version 10 of ACME draft).

* Another incompatibility with ACME v2: body must be {} and not contain v1 data (Pebble fails otherwise).

(cherry picked from commit 155adb1631)

lib/ansible/modules/web_infrastructure/letsencrypt.py

@@ -643,7 +643,7 @@ class ACMEAccount(object):
         '''
         Sends a JWS signed HTTP POST request to the ACME server and returns
         the response as dictionary
-        https://tools.ietf.org/html/draft-ietf-acme-acme-09#section-6.2
+        https://tools.ietf.org/html/draft-ietf-acme-acme-10#section-6.2
         '''
         failed_tries = 0
         while True:
@@ -687,7 +687,10 @@ class ACMEAccount(object):
                 data["header"] = self.jws_header
             data = self.module.jsonify(data)
 
-            resp, info = fetch_url(self.module, url, data=data, method='POST')
+            headers = {
+                'Content-Type': 'application/jose+json',
+            }
+            resp, info = fetch_url(self.module, url, data=data, headers=headers, method='POST')
             result = {}
             try:
                 content = resp.read()
@@ -947,13 +950,13 @@ class ACMEClient(object):
                 continue
 
             uri = challenge['uri'] if self.version == 1 else challenge['url']
+
+            challenge_response = {}
+            if self.version == 1:
                 token = re.sub(r"[^A-Za-z0-9_\-]", "_", challenge['token'])
                 keyauthorization = self.account.get_keyauthorization(token)
-
-            challenge_response = {
-                "resource": "challenge",
-                "keyAuthorization": keyauthorization,
-            }
+                challenge_response["resource"] = "challenge"
+                challenge_response["keyAuthorization"] = keyauthorization
             result, info = self.account.send_signed_request(uri, challenge_response)
             if info['status'] not in [200, 202]:
                 self.module.fail_json(msg="Error validating challenge: CODE: {0} RESULT: {1}".format(info['status'], result))