Check for CRC or BIB on primary block

[philipkalesse]

This pull request resolves #16 and also adds a test under tests/security_tests.rs.

One issue is the function new_complete_bundle() in tests/bundle_tests.rs returns a Bundle without CRC and BIB protecting the primary block when getting passed the CrcRawType = 0.

Therefore the following tests fail when running the tests with --feature bpsec:

• bundle_tests()
• bundle_helpers()
• bundle_canonical_update_tests()
• bundle_add_cblock()
• status_report_tests()

Question to the maintainers: Should these tests include a BIB protecting the primary block or should they receive the #[cfg(not(feature = "bpsec"))] flag to only run when executing the tests without the BPSec feature?

[gh0st42]

bpsec should be tested in the bpsec tests to keep it simpler, there tests should be with crc 0 and BIB

[philipkalesse]

Now validate is only running on invalid bundles if the bpsec feature is not used. Validate now checks that the primary Block is covered by a CRC or BIB and an additional tests is added.