[tracker] functional-tests: Add missing GLib import

[Sam Thursfield <sthursfield src gnome org>]

commit 07ae403c70030d70cc3461be6bb23c2ec6d6684e
Author: Sam Thursfield <sam afuera me uk>
Date:   Mon Jun 13 21:58:45 2016 +0100

    functional-tests: Add missing GLib import
    
    Fixes an ImportError.

 tests/functional-tests/02-sparql-bugs.py |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/tests/functional-tests/02-sparql-bugs.py b/tests/functional-tests/02-sparql-bugs.py
index f831a5d..f4f541e 100755
--- a/tests/functional-tests/02-sparql-bugs.py
+++ b/tests/functional-tests/02-sparql-bugs.py
@@ -21,6 +21,9 @@
 """
 Peculiar Sparql behavour reported in bugs
 """
+
+from gi.repository import GLib
+
 import sys,os
 import unittest
 import time