Catch common client connection errors in ProviderJob

[uphlewis]

Currently if these bubble up from the provider code they are rendered as a "Critical provision provider error" but we can probably add handling to wrap common client connection/timeout/ssl errors and render a friendlier and more helpful error message like "Provider API connection failed".

Examples of errors we could try and wrap:

• cURL connection errors
• Guzzle connection errors
• SSL errors
• Socket timeouts
• SOAP connection errors?