Add postsnd job when bufrsnd it on (#926)

In the workflow refactoring, the addition of postsnd to the task list when
bufrsnd is true was inadvertently left out. It is now added back in.

Author: WalterKolczynski-NOAA

workflow/applications.py

@@ -186,6 +186,9 @@ def _cycled_configs(self):
         if self.do_gempak:
             configs += ['gempak']
 
+        if self.do_bufrsnd:
+            configs += ['postsnd']
+
         if self.do_awips:
             configs += ['awips']