Merge changes from topic "bouncycastle_ike_digests" into rvc-dev
* changes:
Remove dependency on bouncycastle_ike_digests filegroup
Add ike-internals target as a placeholder
This IKEv2 library is an in-process client library implementing the IKEv2 protocol as well as extensions necessary for the support of IWLAN. It is designed to work in a non-privileged fashion on top of the Android IPsec API surface.