test rest: fix incorrect URL encoding which breaks with new starlette

Signed-off-by: Dinesh Dutt <dd.ps4u@gmail.com>

Author: ddutt

tests/integration/test_rest.py

@@ -93,7 +93,7 @@
            'state=active',
            'priVtepIp=10.0.0.112',
            'query_str=hostname%20==%20"leaf01"',
-           'query_str=hostname=="leaf01"%20and%201000<mtu<2000',
+           'query_str=hostname=="leaf01"%20and%201000%3Cmtu%3C2000',
            'what=mtu',
            'what=numChanges',
            'what=uptime',