Debug log all cases where we mark a build as incomplete in the queue

Should help us narrow down why some builds are falling back

buildman/manager/basemanager.py

@@ -17,7 +17,7 @@ class BaseManager(object):
         every few minutes. """
     self.job_heartbeat_callback(build_job)
 
-  def setup_time(self):
+  def overall_setup_time(self):
     """ Returns the number of seconds that the build system should wait before allowing the job
         to be picked up again after called 'schedule'.
     """

buildman/manager/enterprise.py

@@ -45,7 +45,7 @@ class EnterpriseManager(BaseManager):
     # production, build workers in enterprise are long-lived and register dynamically.
     self.register_component(REGISTRATION_REALM, DynamicRegistrationComponent)
 
-  def setup_time(self):
+  def overall_setup_time(self):
     # Builders are already registered, so the setup time should be essentially instant. We therefore
     # only return a minute here.
     return 60