V1Connector(.java) sendData eats http errors

[jvsherwood]

When sending content (like attachments) to V1 via the API, if any http error codes occur this information doesn't result in any error being sent to the caller, so the user of the api to send attachments has no way to know if the attachment was successful

[semplar]

@jvsherwood it seems we can't push a branch to this repo, I've e-mailed an access request to VersionOne support.

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Vyacheslav from MFConnect dev team.