Issue 371: Updating charts to latest version

[SrishT]

Signed-off-by: SrishT [email protected]

Change log description

Updates the zookeeper and zookeeper operator version within the charts and the manifest files

Purpose of the change

Fixes #371

What the code does

Changes the default version of the zookeeper operator and zookeeper cluster to 0.2.12

How to verify it

Should deploy the latest version of zookeeper operator as well as zookeeper cluster i.e. 0.2.12

[codecov-commenter]

Codecov Report

Merging #372 (7d09b2f) into master (5e2c1bb) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #372   +/-   ##
=======================================
  Coverage   85.87%   85.87%           
=======================================
  Files          11       11           
  Lines        1558     1558           
=======================================
  Hits         1338     1338           
  Misses        147      147           
  Partials       73       73           

Impacted Files	Coverage Δ
...g/apis/zookeeper/v1beta1/zookeepercluster_types.go	98.77% <ø> (ø)

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[anishakj]

LGTM