Rename pass_deploy_info to heartbeat

by default, Ironic's API routing now exposes only 'lookup' and 'heartbeat'
vendor passthru methods of drivers as public routes [0].

Rename the vendor passtru method 'pass_deploy_info' of fuel-agent driver
to 'heartbeat' to make it accessable w/o authentication by callback
script.

In the Ocata cycle, this also will be removed and fuel-agent driver
must switch to the root 'heartbeat' API (/v1/heartbeat/node-uuid>).

[0]
https://github.com/openstack/ironic/blob/master/ironic/api/config.py#L37

Change-Id: Ie1dbd8a8aac62034beba88ecd206a8e7712514e2

contrib/ironic/ironic-fa-deploy/ironic_fa_deploy/modules/fuel_agent.py

@@ -50,7 +50,7 @@ from ironic.drivers.modules import image_cache
 agent_opts = [
     cfg.StrOpt('pxe_config_template',
                default=os.path.join(os.path.dirname(__file__),
-                    'fuel_config.template'),
+                                    'fuel_config.template'),
                help='Template file for PXE configuration.'),
     cfg.StrOpt('deploy_kernel',
                help='UUID (from Glance) of the default deployment kernel.'),
@@ -492,7 +492,7 @@ class FuelAgentVendor(base.VendorInterface):
 
     @base.passthru(['POST'])
     @task_manager.require_exclusive_lock
-    def pass_deploy_info(self, task, **kwargs):
+    def heartbeat(self, task, **kwargs):
         """Continues the deployment of baremetal node."""
 
         node = task.node

fuel_agent/cmd/ironic_callback.py

@@ -69,8 +69,8 @@ def main():
             "error_message": "no errors"}
 
     passthru = '%(api-url)s/v1/nodes/%(deployment_id)s/vendor_passthru' \
-               '/pass_deploy_info' % {'api-url': api_url,
-                                      'deployment_id': deployment_id}
+               '/heartbeat' % {'api-url': api_url,
+                               'deployment_id': deployment_id}
     try:
         resp = requests.post(passthru, data=json.dumps(data),
                              headers={'Content-Type': 'application/json',