Added ansible statement to ensure a CLEAN Zookeeper DB at everry startup

Vagrantfile

@@ -38,7 +38,7 @@ Vagrant.configure("2") do |config|
           ansible.playbook = "ansible-playbook.yml"
     end   # End of "config.vm.provision"
 
-    config.vm.provision "restart_kafka", type:'ansible_local', run: "never" do |restart_kafka|
+    config.vm.provision "restart_kafka", type:'ansible_local', run: "always" do |restart_kafka|
           restart_kafka.verbose = "v"
           restart_kafka.playbook = "ansible-playbook_restart_kafka.yml"
     end   # End of "config.vm.restart_kafka"

vagrant/ansible-playbook.yml

@@ -204,6 +204,11 @@
       path: /usr/local/bin/kafka-demo.sh
       mode: 0755
 
+  - name: Clearing any old zookeeper databases so ensuring a clean ZK env
+    file:
+      path: /var/lib/zookeeper/version-2/log.*
+      state: absent
+
 
 ###
 ### Start Kafka services at boot time

vagrant/ansible-playbook_restart_kafka.yml

@@ -10,6 +10,11 @@
 ### RESTART Kafka services 
 ###
 
+  - name: Clearing any old zookeeper databases so ensuring a clean ZK env
+    file:
+      path: /var/lib/zookeeper/version-2/log.*
+      state: absent
+
   - name: Make sure Kafka services are restarted
     service:
        name: "{{ item }}"