Fix DNS tests

* test/src/process-tests.el: (lookup-family-specification,
lookup-unicode-domains, unibyte-domain-name, lookup-google,
non-existent-lookup-failure): Skip on Hydra, which doesn't have DNS.
Fix buggy test condition.  (Bug#37165)
1 job for master in 90 minutes and 1 second (queued for 2 seconds)
Status Job ID Name Coverage
  Test
failed #3114
test-all

01:30:01

 
Name Stage Failure
failed
test-all Test The script exceeded the maximum execution time set for the job
make -C test check-expensive
make[1]: Entering directory '/builds/emacs/emacs/test'
rm -f ./*.tmp
make[2]: Entering directory '/builds/emacs/emacs/test'
make[3]: Entering directory '/builds/emacs/emacs/test'
ELC lisp/net/tramp-tests.elc
GEN lisp/net/tramp-tests.log
Pulling docker image gitlab/gitlab-runner-helper:x86_64-d0b76032 ...
ERROR: Job failed: execution took longer than 1h30m0s seconds