[LNT] Python 3 support: adapt to filter returning an iterator

Adapt calls to filter() to the fact it returns an iterator in Python 3. This
was produced by running futurize's stage2 lib2to3.fixes.fix_filter.

Reviewers: cmatthews, hubert.reinterpretcast, kristof.beyls

Reviewed By: hubert.reinterpretcast

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D67815

llvm-svn: 372819

Author: Thomas Preud'homme

lnt/server/reporting/summaryreport.py

@@ -119,7 +119,7 @@ def should_be_in_report(machine):
                 if rex.match(machine.name):
                     return True
         self.requested_machines = dict(
-            (ts, filter(should_be_in_report, session.query(ts.Machine).all()))
+            (ts, list(filter(should_be_in_report, session.query(ts.Machine).all())))
             for ts in self.testsuites)
         self.requested_machine_ids = dict(
             (ts, [m.id for m in machines])