Increase socket connect retry timeout for integration test (#30681) (#30683)

*  Increase persistent connection local socket
   retry timeout to fix intermittent failure in
   network integration test
(cherry picked from commit 869cd6f729)

test/integration/network-integration.cfg

@@ -10,3 +10,5 @@ ssh_args = '-o UserKnownHostsFile=/dev/null'
 
 [persistent_connection]
 command_timeout = 60
+connect_timeout = 60
+connect_retry_timeout = 60