Test output should not include cf2 subnet
add migration for creating subnets in second AZ

[#55863712]
Add ci:build_stemcell as a step towards testing stemcells

  * expose duplication present in ci:publish_stemcell

Signed-off-by: Colin Humphreys <chumphreys@pivotallabs.com>
Cleanup spec

Signed-off-by: Colin Humphreys <chumphreys@pivotallabs.com>
aws migration for websocket support

  Opens port 4443 on the security group associated with the 'cfrouter' ELB
  Adds a new SSL listener on port 4443 with the existing cfrouter_cert to the cfrouter ELB
Make spec speak the truth
Moved StemcellEnvironment from bosh-dev to bosh-stemcell

Signed-off-by: Abhijit Hiremagalur <abhi@pivotallabs.com>
Rename / refactor for clarity

Signed-off-by: Colin Humphreys <chumphreys@pivotallabs.com>
Replace puts with FileUtils verbose flag

Signed-off-by: Colin Humphreys <chumphreys@pivotallabs.com>
Bosh::Dev::StemcellBuilderOptions -> Bosh::Stemcell::BuilderOptions

Signed-off-by: Abhijit Hiremagalur <abhi@pivotallabs.com>
Bosh::Dev::StemcellBuilderCommand -> Bosh::Stemcell::BuilderCommand

Signed-off-by: Abhijit Hiremagalur <abhi@pivotallabs.com>