Rewrite hotspare_replace_003_neg.

This test case was overly complicated. The new version is simpler and runs
faster. I also moved it into the zpool_import directory because it doesn't
really have anything to do with hotspares.

tests/sys/cddl/zfs/tests/cli_root/zpool_import/Makefile
tests/sys/cddl/zfs/tests/cli_root/zpool_import/zpool_import_destroyed_002_neg.ksh
tests/sys/cddl/zfs/tests/cli_root/zpool_import/zpool_import_test.sh
tests/sys/cddl/zfs/tests/hotspare/Makefile
tests/sys/cddl/zfs/tests/hotspare/hotspare_replace_003_neg.ksh
tests/sys/cddl/zfs/tests/hotspare/hotspare_test.sh
Move hotspare_replace_003_neg to zpool_import_destroyed_002_neg and
simplify it.

Sponsored by: Spectra Logic Corp