samples: crypto: change config to run test sample.drivers.crypto.stm32

The test sample.drivers.crypto.stm32 was built only for the stm32 crypto
driver (build_only: true).
This commit changes the configuration to run the test and adds regex for
the supported modes.
Additionally integration_platform native_posix is removed from the
crypto.stm32 test configuration, such that stm32 targets built in CI.

Signed-off-by: Thomas Stranger <thomas.stranger@outlook.com>