Improve error messages - Read Timeout and 503 error

[aalexmonteiro]

Scenario/Intent

When a read-out timeout or error 503 occurs, the error messages are not very clear. The SDK should return a message with more information about the error to the user.

Environment Details

• **OneView SDK Version: current master repo
• **OneView Appliance Version: Any
• **OneView Client API Version: Any
• **Ruby Version: 2.2.3+
• **Platform: Any

Steps to Reproduce

Attempt a connection with offline oneview to return a timeout.

Expected Result

A error message with more information about the error.

Actual Result

A error message without details about the error.

[AsisBagga]

This SDK has limited support and will not be actively developed for the foreseeable future.