MFC r310786, r310803, r310985, r311894

r310786:
Reduce the runtime of the GELI tests

There is no reduction in test coverage. On my system runtime is reduced
from 38m32s to 6m24s.

tests/sys/geom/class/eli/conf.sh
tests/sys/geom/class/eli/init_a_test.sh
tests/sys/geom/class/eli/init_test.sh
tests/sys/geom/class/eli/integrity_copy_test.sh
tests/sys/geom/class/eli/integrity_data_test.sh
tests/sys/geom/class/eli/integrity_hmac_test.sh
tests/sys/geom/class/eli/onetime_a_test.sh
tests/sys/geom/class/eli/onetime_test.sh
Move the looping code into common functions in conf.sh, and remove
alias ciphers from the list.

tests/sys/geom/class/eli/init_a_test.sh
tests/sys/geom/class/eli/init_test.sh
tests/sys/geom/class/eli/integrity_copy_test.sh
tests/sys/geom/class/eli/integrity_data_test.sh
tests/sys/geom/class/eli/integrity_hmac_test.sh
tests/sys/geom/class/eli/onetime_a_test.sh
Move a few commands that don't need to be in the inner loop out.

tests/sys/geom/class/eli/init_test.sh
tests/sys/geom/class/eli/onetime_a_test.sh
Reduce the sector count

tests/sys/geom/class/eli/Makefile
tests/sys/geom/class/eli/init_alias_test.sh
Add a test for initializing a GELI device using one of the cipher
aliases, and check that the alias is correctly interpreted.

MFC after: 4 weeks
Sponsored by: Spectra Logic Corp
Differential Revision: https://reviews.freebsd.org/D8814

r310803:
ATFify the gnop tests

Also, add test cases for the -p, -P, and -s options to gnop create

Reviewed by: ngie
MFC after: 4 weeks
Differential Revision: https://reviews.freebsd.org/D8892

r310985:
Update ObsoleteFiles.inc for r310803

MFC after: 26 days
X-MFC-with: 310803

r311894:
Fix typo from change 310985 in ObsoleteFiles.inc

MFC after: 16 days
X-MFC-With: 310803
Sponsored by: Spectra Logic Corp