Fix tramp-test32-shell-command

* test/lisp/net/tramp-tests.el (tramp-test32-shell-command):
Run only if "tput" exist.
1 job for master in 52 minutes and 57 seconds (queued for 1 second)
Status Job ID Name Coverage
  Test
failed #1402
test-all

00:52:57

 
Name Stage Failure
failed
test-all Test
make[2]: *** [check-doit] Error 1
Makefile:313: recipe for target 'check-doit' failed
make[2]: Leaving directory '/builds/emacs/emacs/test'
Makefile:288: recipe for target 'check-expensive' failed
make[1]: *** [check-expensive] Error 2
make[1]: Leaving directory '/builds/emacs/emacs/test'
Makefile:962: recipe for target 'check-expensive' failed
make: *** [check-expensive] Error 2
ERROR: Job failed: exit code 1