crosh: add set_time and time_info

Add experimental commands for interfacing with the new
tlsdate interfaces.  If we pursue these, they will need to
move into chrome://system and settings (perhaps).

TEST=emerges x86-alex and both work from a guest session. FEATURES=test pass as well
BUG=chromium:271644

Change-Id: I56dd0c35db2fa66a72d2b2973c21dea779f392a0
Reviewed-on: https://chromium-review.googlesource.com/175044
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Commit-Queue: Will Drewry <wad@chromium.org>
Tested-by: Will Drewry <wad@chromium.org>
1 file changed