Refactoring security core tests and adding more tests:
- Dynamically generate ca and identity certificates in authentication tests, so that certificate expiry is tested.
Added writing/reading samples to these tests to ensure that nodes can (or cannot) communicate in a specific test case
- Secure communication tests: improved the validation of encryption in wrapper
- Added test for access control plugin settings
- Replaced the in-code test identities (and included ca private keys), added an additional identity
Signed-off-by: Dennis Potman <dennis.potman@adlinktech.com>
