[releng] Port convert-to-tarballs to HTMLParser

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 62c85310841e1cab8d16b1e71fdef401954f35ab
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Mon Feb 17 16:23:06 2020 -0600

    Port convert-to-tarballs to HTMLParser
    
    SGMLParser is deprecated since python 2.6 and no longer exists in
    python3.

 tools/smoketesting/convert-to-tarballs.py | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/tools/smoketesting/convert-to-tarballs.py b/tools/smoketesting/convert-to-tarballs.py
index 57cacb1..0853932 100755
--- a/tools/smoketesting/convert-to-tarballs.py
+++ b/tools/smoketesting/convert-to-tarballs.py
@@ -32,7 +32,7 @@ import signal
 import subprocess
 from ftplib import FTP
 from xml.dom import minidom, Node
-from sgmllib import SGMLParser
+from HTMLParser import HTMLParser
 import requests
 import urlparse
 if not hasattr(__builtins__, 'set'):
@@ -242,9 +242,9 @@ class Options:
                                  node.nodeName + '\n')
                 sys.exit(1)
 
-class urllister(SGMLParser):
+class urllister(HTMLParser):
     def reset(self):
-        SGMLParser.reset(self)
+        HTMLParser.reset(self)
         self.urls = []
 
     def start_a(self, attrs):