CsDhcp.py: fix runtests.sh error (#5671)

$ cd systemvm/test
$ bash -x runtests.sh
......
../debian/opt/cloud/bin/cs/CsDhcp.py:114:25: E266 too many leading '#' for block comment
+ '[' 1 -gt 0 ']'
+ echo 'pycodestyle failed, please check your code'

Author: weizhouapache

systemvm/debian/opt/cloud/bin/cs/CsDhcp.py

@@ -111,7 +111,7 @@ def configure_server(self):
                 if self.config.is_dhcp() and not self.config.use_extdns():
                     guest_ip = self.config.address().get_guest_ip()
                     if guest_ip and guest_ip in dns_list and ip not in dns_list:
-                        ## Replace the default guest IP in VR with the ip in additional IP ranges, if shared network has multiple IP ranges.
+                        # Replace the default guest IP in VR with the ip in additional IP ranges, if shared network has multiple IP ranges.
                         dns_list.remove(guest_ip)
                         dns_list.insert(0, ip)
                 line = "dhcp-option=tag:interface-%s-%s,6,%s" % (device, idx, ','.join(dns_list))