Upgrade zookeeper and traefik packages (#185)

* Upgrade zookeeper to version 3.4.8

* Updated traefik version to v1.0.0. Added new features: ssl, multidomain, import key/cert from metadata, run as traefik user.

* Upgrade kafka to version 0.10.0

* Updated traefik version to v1.0.1. ssl key and crt set as required.

* Updated traefik version to v1.0.1. ssl working modes available.

templates/kafka/1/README.md

@@ -0,0 +1,28 @@
+# Apache Kafka (Experimental)
+
+### Info:
+
+ This template creates, scale in and scale out a multinodes kafka broker cluster on top of Rancher. The configuration is generated with confd from Rancher metadata. 
+ Cluster size are variable after deployment, and get reconfigured after refresh interval.
+ 
+ 
+### 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_LOG_DIRS="/opt/kafka/logs"
+- KAFKA_LOG_RETENTION_HOURS="168"
+- KAFKA_NUM_PARTITIONS="1"
+- ADVERTISE_PUB_IP= < true | false >
+
+ Select zookeeper stack/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..