Add auth support for CouchDB (MeetMe#58)

Author: Gavin M. Roy

README.md

@@ -231,10 +231,14 @@ Configuration Example
             host: localhost
             port: 5984
             #verify_ssl_cert: true
+            #username: foo
+            #password: bar
          -  name: localhost
             host: localhost
             port: 5984
             #verify_ssl_cert: true
+            #username: foo
+            #password: bar
 
       edgecast:
         - name: My Edgecase Account

etc/newrelic/newrelic_plugin_agent.cfg

@@ -18,6 +18,8 @@ Application:
   #  host: localhost
   #  verify_ssl_cert: true
   #  port: 5984
+  #  username: foo
+  # password: bar
 
   #edgecast:
   #  name: My Edgecase Account

newrelic_plugin_agent/plugins/couchdb.py

@@ -78,10 +78,13 @@ def fetch_data(self):
         :rtype: dict
 
         """
+        kwargs = {'url': self.couchdb_stats_url,
+                  'verify': self.config.get('verify_ssl_cert', True)}
+        if 'username' in self.config and 'password' in self.config:
+            kwargs['auth'] = (self.config['username'], self.config['password'])
+
         try:
-            response = requests.get(self.couchdb_stats_url,
-                                    verify=self.config.get('verify_ssl_cert',
-                                                           True))
+            response = requests.get(**kwargs)
         except requests.ConnectionError as error:
             LOGGER.error('Error polling CouchDB: %s', error)
             return {}