Donot start zookeeper at installation

Donot start zookeeper at installation.
It will be started after proper perms/ownership is set for /var/lib/zookeeper.

Change-Id: I1d58c909be13ead2fe33138d93c4c6535ddfdc1d
Partial-Bug: #1720728

playbooks/roles/zookeeper/files/policy-rc.d

@@ -0,0 +1,11 @@
+#!/bin/bash
+if [ "${1}" = "--quiet" ]; then
+  name="$2"
+else
+  name="$1"
+fi
+sensitive_services_list=/etc/sensitive_services
+if [ -e $sensitive_services_list ]; then
+    grep -x "$name" "$sensitive_services_list" && exit 101
+fi
+exit 0

playbooks/roles/zookeeper/tasks/install/Debian.yml

@@ -1,4 +1,10 @@
 ---
+- name: Avoid zookeeper starting as a part of installation
+  lineinfile: dest=/etc/sensitive_services line=zookeeper state=present create=yes
+
+- name: install policy-rc.d to selectively disable automated service start by apt
+  copy: src=policy-rc.d dest=/usr/sbin/policy-rc.d mode=0755
+
 - name: Install zookeeper with apt
   include: apt.yml
   when: zookeeper_debian_apt_install