Setup the DeaClient as part of the Background Job setup

[#67453014]

Signed-off-by: Michael Fraenkel <fraenkel@us.ibm.com>
Move restage API doc so it does not have params from app doc.

[#65335102]

Signed-off-by: Karl Isenberg <kisenberg@pivotallabs.com>
Updated api spec hash to match recent restage changes

[#65335102]
Finish StagingsController refactoring

[#69544442]

Signed-off-by: Kai Zhang <kaizhang@cn.ibm.com>
Expose configuration for diagnostic output directory

* Generate `directories` configuration in the cc config documents
* Update api control script to create diagnostics directory with the
  appropriate owner