tests: Fix DeprecationWarning in SRv6 L3VPN topotest

Fix the following warning:

tests/topotests/bgp_srv6l3vpn_sid/test_bgp_srv6l3vpn_sid.py:42
  /media/SharedUTM/workspace/frr/tests/topotests/bgp_srv6l3vpn_sid/test_bgp_srv6l3vpn_sid.py:42: DeprecationWarning: invalid escape sequence '\ '

In test_bgp_srv6l3vpn_sid.py we have a comment containing some '\'
characters. Python mistakenly tries to interpret such "\" characters
as escape sequences, which leads to the above warning.

Let's tell Python to treat the comment as a raw string,
so that it simply treats backslashes as literal characters rather than
escape sequences.

Signed-off-by: Carmine Scarpitta <cscarpit@cisco.com>

diff --git a/tests/topotests/bgp_srv6l3vpn_sid/test_bgp_srv6l3vpn_sid.py b/tests/topotests/bgp_srv6l3vpn_sid/test_bgp_srv6l3vpn_sid.py
index 189d2baf17aab9ac2299a3dd73ffc755f0cfff6b..984cf97e288b4cd450968b0197c9d18c77178ec4 100755 (executable)
--- a/tests/topotests/bgp_srv6l3vpn_sid/test_bgp_srv6l3vpn_sid.py
+++ b/tests/topotests/bgp_srv6l3vpn_sid/test_bgp_srv6l3vpn_sid.py
@@ -39,7 +39,7 @@ from lib.checkping import check_ping
 
 
 def build_topo(tgen):
-    """
+    r"""
      CE1     CE3      CE5
     (eth0)  (eth0)   (eth0)
       :2      :2      :2