compile genisoimage from source

- Added cdrkit blob
- Removed old genisoimage blob

Signed-off-by: Tony Hansmann <thansmann@pivotallabs.com>
Stop installing libpq-dev and genisoimage

- We have been shipping libpq libs and headers as packages for ages,
  this is a leftover from before we started deploying BOSH with
  MicroBOSH
- Distro packaging support for cdrkit (of which genisoimage is a part)
  varies. We are dropping this to package it from source. (It never
  worked on RedHat anyway)

Signed-off-by: Jeffrey Peckham <peckham@pivotallabs.com>
First pass at testing SshdMonitor / SshdService

Signed-off-by: Jeffrey Peckham <peckham@pivotallabs.com>