feat(build): Add 'unzip' as dependency, remove apt from postInst. (sp…

…innaker#194)

feat(build): Add 'unzip' as dependency, remove apt from postInst. (sp…

…innaker#194)

fix(install): Made postInst sh-compatible, not bash. (spinnaker#192)

fix(install): Use tempdir instead of /usr/bin. (spinnaker#191)

(halconfig) fix redis connection (spinnaker#184)

(halconfig) fix redis connection (spinnaker#184)

Refactor package and version handling (spinnaker#178)

This should make it easier to add more implementations in the future.
No new features, only refactoring

* Made a new PackageUtil interface and moved code into three different implementations (for rpm, nupkg and deb)
* Updated tests to reflect the new implementation

(core) Don't fail worker threads on top-level exceptions. (spinnaker#180

)

Allow for multiple RPM repositories (spinnaker#179)

(Azure) Ensure 'azure_image_name' conforms to CaptureNamePrefix regex…

… in packer (spinnaker#177)