Reverts edit made to the check for the details.requestparameters.html…

…part (#1662)

* truncates htmlpart to something ES can handle

* adding comments to code and checking if values exist per @arcrose's suggestion

* removing whitespace

* adds a constnat and adds description for the ES_FIELD_LIMIT_VALUE constant.

* reverting check for details.requestparameters.htmlpart edit

* fixing whitespace

* fixing whitespace

mq/plugins/cloudtrail.py

@@ -126,8 +126,11 @@ def onMessage(self, message, metadata):
         so we'll truncate it to 4096 characters using the constant ES_FIELD_VALUE_LIMIT so that ES will ingest it,
         leaving us with knowledge of what the field contains without the overkill of storing the entire page.
         '''
+
         ES_FIELD_VALUE_LIMIT = 4095
-        if message.get('details', {}).get('requestparameters', {}).get('htmlpart') is not None:
+
+        if 'requestparameters' in message['details']:
+            if 'htmlpart' in message['details']['requestparameters']:
                 message['details']['requestparameters']['htmlpart'] = message['details']['requestparameters']['htmlpart'][0:ES_FIELD_VALUE_LIMIT]
 
         for modified_key in self.modify_keys: