nailgun-agent fails on bootstrap because of json gem

[Matthew Mosesohn]

bootstrap nodes are failing to check into nailgun because rubygem-json_pure 1.8.1 can't import.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/127209

[Matthew Mosesohn (raytrac3r)]

modifying spec didn't help

[Matthew Mosesohn (raytrac3r)]

Modifying body. rubygem-json_pure-1.8.1 is a bad package:
find /usr/lib | grep json | grep -v mcol | grep -v tab | grep VERS
/usr/lib/ruby/gems/1.8/gems/json-1.8.1/VERSION
/usr/lib/ruby/gems/1.8/gems/json-1.6.1/VERSION

[root@bootstrap ~]# irb
irb(main):001:0> require 'rubygems'
=> true
irb(main):002:0> require 'json'
LoadError: no such file to load -- json
 from /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
 from /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
 from (irb):2
 from :0
irb(main):003:0>

Need to rebuild rubygem-json_pure 1.8.1 so that it can be detected in gem list.

[OpenStack Infra (hudson-openstack)]

Change abandoned by Matthew Mosesohn (<email address hidden>) on branch: master
Review: https://review.openstack.org/127209
Reason: this is an incorrect fix to the bug.