Expand coverage of unit tests for time-stamp

* test/lisp/time-stamp-tests.el: Remove redundant word "test"
from the names of all the tests.
(time-stamp-custom-time-zone, time-stamp-custom-pattern,
time-stamp-custom-inserts-lines, time-stamp-custom-count,
time-stamp-helper-safe-locals): New tests
1 job for master in 60 minutes and 49 seconds (queued for 1 second)
Status Job ID Name Coverage
  Test
failed #4292
test-all

01:00:49

 
Name Stage Failure
failed
test-all Test
Makefile:319: recipe for target 'check-doit' failed
make[2]: Leaving directory '/builds/emacs/emacs/test'
make[2]: *** [check-doit] Error 1
make[1]: *** [check-expensive] Error 2
Makefile:294: recipe for target 'check-expensive' failed
make[1]: Leaving directory '/builds/emacs/emacs/test'
Makefile:959: recipe for target 'check-expensive' failed
make: *** [check-expensive] Error 2
ERROR: Job failed: exit code 1