Invalid kafka_consumer documentation

kafka_consumer is able to figure
out partitions on its own, there is
no need to specify them here.

Change-Id: I9f97d95bf49b7b89a4eccfa119e07cb30e4f37b1

conf.d/kafka_consumer.yaml.example

@@ -4,8 +4,6 @@ init_config:
 
 instances:
 #  -   kafka_connect_str: localhost:19092
-#      zk_connect_str: localhost:2181
-#      zk_prefix: /0.8
 # It is possible to get the lag for each partition, the default is to sum lag for all partitions
 #      per_partition: False
 # Full includes additional metrics with actual offsets per partition, can't be set if per_partition is False

docs/Plugins.md

@@ -941,23 +941,21 @@ This section describes the Kafka check that can be performed by the Agent.  The
 
 Sample config:
 
-```
+```yml
 init_config:
 
 instances:
-- consumer_groups:
-    '1_alarm-state-transitions':
-        'alarm-state-transitions': ['3', '2', '1', '0']
-    '1_metrics':
-        'metrics': &id001 ['3', '2', '1', '0']
-        'test':
-            'healthcheck': ['1', '0']
-        'thresh-event':
-            'events': ['3', '2', '1', '0']
-        'thresh-metric':
-            'metrics': *id001
-  kafka_connect_str: localhost:9092
-  zk_connect_str: localhost:2181
+- built_by: Kafka
+  consumer_groups:
+    1_metrics:
+      metrics: []
+    thresh-event:
+      events: []
+    thresh-metric:
+      metrics: []
+  kafka_connect_str: 192.168.10.6:9092
+  name: 192.168.10.6:9092
+  per_partition: false
 ```
 
 The Kafka checks return the following metrics: