test/py: fix CONFIG_ tests

Some CONFIG_ variables were recently renamed, but test/py wasn't updated
to match. This causes some tests to be skipped. Fix test/py so the tests
are run.

Fixes: 11636258 ("Rename reset to sysreset")
Fixes: f1f9d4fa ("hush: complete renaming CONFIG_SYS_HUSH_PARSER to CONFIG_HUSH_PARSER")
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>