Update beat-devel recipe to include python at runtime

conda/beat-devel/meta.yaml

 package:
   name: beat-devel
-  version: 2018.04.18
+  version: 2018.04.19
 
 build:
   number: 0
@@ -11,6 +11,7 @@ build:
 
 requirements:
   host:
+    - python {{ python }}
     - bob-devel 2018.04.13
     - requests 2.18.4
     - simplejson 3.13.2