[cleaner] Treat IPv6 netmask as part of obfuscated string

We need to add the netmask to the string to obfuscate, i.e. to the first
group of matched r.e. Otherwise, '2620:52:0:25c0::/64' like string is
obfuscated to '534f:53ff:fe00:0002::/64/64'.

Closes: #4124

Signed-off-by: Pavel Moravec <[email protected]>

Author: pmoravec

sos/cleaner/parsers/ipv6_parser.py

@@ -27,7 +27,7 @@ class SoSIPv6Parser(SoSCleanerParser):
         # a trailing prefix for the network bits.
         r"(?<![:\\.\\-a-z0-9])((([0-9a-f]{1,4})(:[0-9a-f]{1,4}){7})|"
         r"(([0-9a-f]{1,4}(:[0-9a-f]{0,4}){0,5}))([^.])::(([0-9a-f]{1,4}"
-        r"(:[0-9a-f]{1,4}){0,5})?))(/\d{1,3})?(?![:\\a-z0-9])"
+        r"(:[0-9a-f]{1,4}){0,5})?)(/\d{1,3})?)(?![:\\a-z0-9])"
     ]
     parser_skip_files = [
         'etc/dnsmasq.conf.*',