issue #13, added 1.7.0 checksum attribute default['elasticsearch']['tarball_checksum']['1.7.0']
issue #13, added 1.7.0 checksum attribute default['elasticsearch']['tarball_checksum']['1.7.0']

Eurotherm/chef-elasticsearch-cluster,vkhatri/chef-elasticsearch-cluster,shortdudey123/chef-elasticsearch-cluster,Eurotherm/chef-elasticsearch-cluster,WeiBanjo/chef-elasticsearch-cluster,Eurotherm/chef-elasticsearch-cluster,WeiBanjo/chef-elasticsearch-cluster,WeiBanjo/chef-elasticsearch-cluster,shortdudey123/chef-elasticsearch-cluster,shortdudey123/chef-elasticsearch-cluster,vkhatri/chef-elasticsearch-cluster,vkhatri/chef-elasticsearch-cluster