Fix the usage of encoding in OSEHRAHelper
Fix the usage of encoding in OSEHRAHelper

Fix the propagation of the necessity of the self.connection addition to
the encode function signature.

Change-Id: I731b2d49ff12c17c91cf875cf53ec422a13d6e53

OSEHRA/VistA,josephsnyder/VistA,josephsnyder/VistA,josephsnyder/VistA,OSEHRA/VistA,josephsnyder/VistA,OSEHRA/VistA,josephsnyder/VistA,josephsnyder/VistA,OSEHRA/VistA,OSEHRA/VistA,OSEHRA/VistA