Added kafka package for kubernetes. Some bugfixes for cattle packages

kubernetes-templates/kafka/0/README.md

@@ -0,0 +1,33 @@
+# Apache Kafka (Experimental)
+
+### Info:
+
+ This template creates, scale in and scale out a multinodes kafka broker cluster on top of k8s. The configuration is generated with confd from k8s. 
+ Cluster size are variable after deployment, and get reconfigured.
+ 
+ 
+### Usage:
+
+ Select Apache Kafka from catalog. 
+ 
+ Enter the number of nodes, mem and refresh interval for the kafka cluster.
+ 
+ Change the following kafka default parameters, if you need:
+
+- kafka_name="kafka"					# kafka k8s service and rc name.
+- kafka_namespace="kafka"				# kafka k8s namespace
+- kafka_scale=3							# kafka scale to deploy.
+- kafka_mem=512							# kafka broker memory.
+- kafka_log_dir="/opt/kafka/logs"		# Kafka log dir.
+- kafka_log_retention="168"				# kafka log retention. 
+- kafka_num_partitions="1"				# Kafka partitions number
+- kafka_delete_topics="false"			# kafka delete topics
+- kafka_pub_ip= < true | false >		# Advertise public ip to zookeeper.
+- zk_link="kafka-zk/zk" 				# zookeeper namespace/service to connect to.
+ 
+ Click deploy.
+ 
+ Kafka can now be accessed over the Rancher network. 
+
+ Note: When you scale the cluster, zero downtime is not guaranteed..yet..
+