Replace incorrect sed expersion with awk
requested to merge 3003-greedy-regular-expression-causes-intermittent-nsupdate-system-test-failures-v9_16 into v9_16
The sed expression could find the wrong instance of 10. Use awk to replace the TTL field and also to specify the server and issue the send command.
(cherry picked from commit be879cda)
Closes #3003 (closed)