ebpf_hash_table_create should use ebpf_epoch_allocate_with_tag instead of ebpf_epoch_allocate to better identify pool allocations.

[shankarseal]

Currently ebpf_hash_table_create uses ebpf_epoch_allocate as the default allocation method which uses the EBPF_POOL_TAG_EPOCH pool tag. This makes it difficult to distinguish between the objects (maps, pinning table etc.) that are implemented using the hashtable when performing memory usage analysis. If should use ebpf_epoch_allocate_with_tag instead and let the caller pass the tag that would help us identify the underlying object.