proto: opi vs openconfig

[glimchb]

you mentioned https://github.com/ipdk-io/openconfig-public/blob/master/release/models/ipsec/openconfig-ipsec-offload.yang

while OPI is using https://github.com/opiproject/opi-api/blob/main/security/v1/ipsec.proto
which was aligned to https://github.com/ligato/cn-infra/blob/master/examples/cryptodata-proto-plugin/ipsec/ipsec.proto

clarification is needed here