Change Details

`checkimages.py` has a `-time` argument, which is inconsistent with other scripts that use `-sleep`. Add the argument `-sleep:`, and deprecate the name `-time:`, allowing it to still be used but emit a warning that it is deprecated.

`checkimages.py` has a `-time` argument, which is inconsistent with other scripts that use `-sleep`. Add the argument `-sleep:`, and deprecate the name `-time:`, allowing it to still be used but emit a warning that it is deprecated. GCI task: https://codein.withgoogle.com/dashboard/tasks/6239503404498944/

`checkimages.py` has a `-time` argument, which is inconsistent with other scripts that use `-sleep`. Add the argument `-sleep:`, and deprecate the name `-time:`, allowing it to still be used but emit a warning that it is deprecated. GCI task: https://codein.withgoogle.com/dashboard/tasks/6239503404498944/