Decode binData before sending it to Predict function

[lennon310]

So the client won't need to implement decode in predict_raw by themselves.

Unit tests all passed.

Fixes #909

[seldondev]

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[seldondev]

Hi @lennon310. Thanks for your PR.

I'm waiting for a SeldonIO member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[axsaucedo]

/ok-to-test

[axsaucedo]

@lennon310 if you remove .decode from your change it should be good to go.

We had a discussion and confirmed that the bytes may not always be expected to be string, so we would want to make it available as bytes for the user to receive it and use decode themselves.

[axsaucedo]

/ok-to-test

[ukclivecox]

/approve

[ukclivecox]

Thanks @lennon310 !

already acccepted

[axsaucedo]

/approve