Fix spacing
Cleanup for readability

 * convert hashes to 1.9 style
 * stop breaking lines around 80 chars
 * add whitespace
Remove knowledge of Jenkins WORKSPACE env from BATs
Test rake invocation on Infrastructure, instead of BatHelper
Change strings to symbols
Move function inside namespace
Move function inside namespace and to end of rakefile
BatHelper is now responsible for creating and sanitizing the artifacts directory

 * moves logic out of spec.rake
Move logic to named method for clarity
Eliminate last use of WORKSPACE  from StemcellEnvironment

 * stop copying files needlessly when publishing
 * remove CandidateArtifacts
 * remove Stemcell.from_jenkins_build
BatHelper: make FileUtils call verbose
Stemcell: make FileUtils call verbose
Remove unneeded require and silence FileUtils
Added sudo to light stemcell tar creation
Move release downloading from stemcell.rake into Build
Normalize rake arguments
Prevent spurious errors when running vSphere cpi specs

 * don't remove stemcell if it was never created