publish the get_job_by_platform route
publish the get_job_by_platform route

Publish a route to access get_job_by_platform(). This method will be
used by the platform to get new jobs.

Change-Id: I81072dfc77204f46b11511a68e98c9b93333b269

enovance/dci-control-server,goneri/dci-control-server,redhat-cip/dci-control-server,goneri/dci-control-server,enovance/dci-control-server,goneri/dci-control-server,redhat-cip/dci-control-server,goneri/dci-control-server