influx modules: fixes, permission match, py2, args

roles/cobald/library/influx_bucket.py

@@ -92,13 +92,13 @@ class Bucket:
             self.result = None
             self.f = lambda: self._create({
                 "orgID": self.org_id,
-                "description": self.description,
+                "description": self.description if self.description else None,
                 "name": self.name,
                 "retentionRules": []
             })
         else:
             self.result = x[0]
-            if self.description == x[0]["description"]:
+            if self.description == x[0].get("description", ""):
                 return False  # everything matches -> no change needed
             else:
                 self.result = x[0]