feat(scheduler): send the Deis Controller and version as the User-Agent to k8s api requests

Author: helgi

rootfs/requirements.txt

@@ -14,4 +14,5 @@ PyOpenSSL==0.15.1
 pytz==2015.7
 PyYAML==3.11
 requests==2.9.1
+requests-toolbelt==0.6.0
 simpleflock==0.0.3

rootfs/scheduler/__init__.py

@@ -10,8 +10,11 @@
 from docker import Client
 from .states import JobState
 import requests
+from requests_toolbelt import user_agent
 from .utils import dict_merge
 
+from deis import __version__ as deis_version
+
 
 logger = logging.getLogger(__name__)
 
@@ -307,6 +310,7 @@ def __init__(self):
         session.headers = {
             'Authorization': 'Bearer ' + token,
             'Content-Type': 'application/json',
+            'User-Agent': user_agent('Deis Controller', deis_version)
         }
         # TODO: accessing the k8s api server by IP address rather than hostname avoids
         # intermittent DNS errors, but at the price of disabling cert verification.