ebpf_hash_table should initialize ebpf_random if needed

[matthewige]

Describe the feature you'd like supported

Currently, use of ebpf_hash_table requires ebpf_random to be initialized.

Proposed solution

ebpf_hash_table should check if random has been initialized and then initialize it if not.

Additional context

No response

[matthewige]

Consider: Removing the dependency on ebpf_random instead if unnecessary.

[vukovinski]

K-12: Static initialization sequence QED. 🌻