Submit private jobs via API
- depends on !182 (merged)
- updated request_testsinlib/debci/test_handler.rbto update value ofis_privatefield of job as per test object sent by POST/test/:suite/:archand POST/test/batch.
- updated POST '/test/:suite/:arch/:package'to fetchis_privateparams for the new job to be created with the check for accepting valid bool values only.
- updated validate_testsandvalidate_batch_testsintest_handler.rbso thatis_privateaccepts valid bool value only.
- updated after_savecallback injob.rbto not update PackageStatus for aprivate job.
- Added tests in spec/debci/api_spec.rb
Edited  by Pavit Kaur