Fail ASAP in *_run.sh scripts

Failing early is especially important in scripts which run make multiple
times. It prevents the user from missing some failing tests in earlier
runs.

getdns_run.sh

 #!/bin/bash
+set -o errexit -o nounset
 
 # Below a summary of tests that failed including a reason for the failure.
 # It might be wise to move these out of the way before testing with getdns.

knotd_master_run.sh

 #!/bin/bash
+set -o errexit -o nounset
 
 # Path to scenario files
 TESTS=${TESTS:-"sets/knotd/master"}

knotd_slave_run.sh

 #!/bin/bash
+set -o errexit -o nounset
 
 # Path to scenario files
 TESTS=${TESTS:-"sets/knotd/slave"}

kresd_run.sh

 #!/bin/bash
-set -o nounset
+set -o errexit -o nounset
 
 # Path to scenario files
 TESTS=${TESTS:-"sets/resolver"}

pdns_run.sh

 #!/bin/bash
+set -o errexit -o nounset
 
 # Path to scenario files
 TESTS=${TESTS:-"sets/resolver"}

unbound_run.sh

 #!/bin/bash
+set -o errexit -o nounset
 
 # Path to scenario files
 TESTS=${TESTS:-"sets/resolver"}