Enable global HTTP headers to be sent with every request.

pillarsdk/api.py

@@ -1,3 +1,4 @@
+import copy
 import base64
 import requests
 import json
@@ -23,6 +24,9 @@ class Api(object):
     # Global session object to do HTTP requests.
     requests_session = requests.session()
 
+    # HTTP headers that should always be sent with every request.
+    global_headers = {}
+
     def __init__(self, options=None, **kwargs):
         """Create API object
 
@@ -158,11 +162,12 @@ class Api(object):
         """
         token = self.get_token()
 
-        headers = {
+        headers = copy.deepcopy(self.global_headers)
+        headers.update({
             # "Content-Type": "application/json",
             "Accept": "application/json",
             "User-Agent": self.user_agent
-        }
+        })
 
         if token:
             headers['Authorization'] = (