Revert "Allowing multiple releases with the same content"

This reverts commit 8a504f76766c7efbd6bba41ef1ea592468212a1b.
Reverted due to error in creating dev releases using existing
jobs and packages from a previously created final release.
Revert "Updating the test assets gitignore to reflect standard setup"

This reverts commit 9e78cad8eaa27bb23d0ef1f6d8216f05fa96b413.
Reverted due to error in creating dev releases using existing
jobs and packages from a previously created final release.
Revert "Upload new blobs when creating a final release without a prior dev release."

This reverts commit 81506f8a80f32349fa01f4db48104f2cea74dd49.
Reverted due to error in creating dev releases using existing
jobs and packages from a previously created final release.
Revert "Version & VersionList cleanup"

This reverts commit 46a4a765b9d67cdb19755f6ef7a7ab83bfb345e0.
Reverted due to error in creating dev releases using existing
jobs and packages from a previously created final release.
Revert "Ruby 2.1.2 is .tar.gz not .tgz"

This reverts commit bc2051b8521b0388a531074e5d3eebdde7fb43f1.
Reverted due to an error using bundler with ruby 2.1.2 during
BOSH Package compilation.
Revert "Update ruby package spec with Ruby 2.1.2"

This reverts commit 78c1825801930d054621b0b3cbb17d34495b7e5e.
Reverted due to an error using bundler with ruby 2.1.2 during
BOSH Package compilation.
Revert "Update BOSH release to ruby 2.1.2."

This reverts commit f80aa0707cd595aa950bf6eb72ea6ee7394a7fb6.
Reverted due to an error using bundler with ruby 2.1.2 during
BOSH Package compilation.