Add defaults for sh_ rules.

I was helping someone who wanted to use the same set of dependencies in
multiple sh_test rules and we realized that there are no defaults on
sh_test, sh_binary, etc. (see vts_ltp_test*)

Bug: 277261121  # Related to this bug
Change-Id: I81084771432e22e3de230511bdaba1b79a171406
Test: go test ./