[LNT] Python 3 support: fix report version literal

The upgrade_1_to_2 module stores a __report_version__ string literal in
the Parameter column of the Run table which is declared as binary data.
This does not work in Python 3 where strings/text and binary are
different things. This commit changes it for a binary literal instead
(introduced in Python 2.6).

Reviewers: cmatthews, hubert.reinterpretcast, kristof.beyls

Reviewed By: hubert.reinterpretcast

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D68105

llvm-svn: 374304

Author: Thomas Preud'homme

lnt/server/db/migrations/upgrade_1_to_2.py

@@ -38,7 +38,7 @@ def __init__(self, **kwargs):
     logger.info("updating runs")
     all_runs = session.query(Run).\
         filter(sqlalchemy.not_(Run.Parameters.like(
-                '%["__report_version__"%'))).all()
+                b'%["__report_version__"%'))).all()
     for i, run in enumerate(all_runs):
         if i % 1000 == 999:
             logger.info("update run %d of %d" % (i + 1, len(all_runs)))