Hack: Handle specs that contain boolean fields that are required.

[cgardens]

What

• Combination of a UI bug and the fact the API doesn't insert default values... issue: Source validation fails if a required field with a "default" value is not present in config #892

How

• I looked into trying to fix the UI myself but couldn't figure it out. The initial values set for booleans are not being picked up on submit of forms.
• Took any boolean fields that were required and made them not required. In both cases they had defaults. If the connector receives a config without those booleans, it sets the defaults itself.

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