Update bosh-stemcell README

Signed-off-by: Maria Shaldibina <mshaldibina@pivotal.io>
Adding final release for build 2798
Merge final release for build 2798 to develop
Treat missing `packages` key in a release's job spec as empty array instead of raising NPE.

Signed-off-by: Zachary Auerbach <zauerbach@pivotal.io>
Extract disk spec generation

Signed-off-by: Maria Shaldibina <mshaldibina@pivotal.io>
Create parent folder for persistent disk
Retry downloads up to three times. [#85034464]
More robust retry of downloads. [#85034464]

Signed-off-by: Stev Witzel <switzel@pivotal.io>
Fix @logger in api_controller

[#84348176]

Signed-off-by: Stev Witzel <switzel@pivotal.io>
permit newer nokogiri
allow upstream vcloud_cpi improvements that include nokogiri updates
update thin & dependencies to latest; ready for traveling-ruby native gems