bgp_unique_rid generates python warnings every run

[donaldsharp]

bgp_unique_rid/test_bgp_unique_rid.py:850: 12 warnings
/home/sharpd/frr5/tests/topotests/bgp_unique_rid/test_bgp_unique_rid.py:850: SyntaxWarning: "is" with a literal. Did you mean "=="?
if intf is "lo":

isis_advertise_high_metrics/test_isis_advertise_high_metrics.py:419
/home/sharpd/frr5/tests/topotests/isis_advertise_high_metrics/test_isis_advertise_high_metrics.py:419: DeprecationWarning: invalid escape sequence \
"""

-- Docs: https://docs.pytest.org/en/stable/warnings.html
--------------------------------- generated xml file: /tmp/topotests/topotests.xml ---------------------------------

[gpnaveen]

assign to me @gpnaveen ..

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[frrbot]

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