buffer: consider deprecated raws as valid encoding
Even though raws is a deprecated encoding, it is still valid as per
ParseEncoding in node.cc.
Refer https://github.com/nodejs/node/blob/v4.0.0/src/node.cc#L1214-L1218
cc @trevnorris
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Even though raws is a deprecated encoding, it is still valid as per
ParseEncoding in node.cc.
Refer https://github.com/nodejs/node/blob/v4.0.0/src/node.cc#L1214-L1218
cc @trevnorris