Remove unused libyaml package

Signed-off-by: Eric Malm <emalm@pivotallabs.com>
Prune old ruby and golang blobs

Signed-off-by: Eric Malm <emalm@pivotallabs.com>
Add travis config and check for unused blobs

Signed-off-by: Eric Malm <emalm@pivotallabs.com>
Bump packages/ruby

Bump :
  Eric Malm:
     Remove pointless pre_packaging script

Signed-off-by: Sabha Parameswaran <sparameswaran@gopivotal.com>