FMWK-312 Cleanup for configuration and documentation

[agrgr]

• Align sendKey fields in ClientPolicy configuration
• Cleanup for documentation and tests

[roimenashe]

Looks good, just curious about changing the default sendKey for few more policies:

...
clientPolicy.batchWritePolicyDefault.sendKey = sendKey;
clientPolicy.queryPolicyDefault.sendKey = sendKey;
clientPolicy.scanPolicyDefault.sendKey = sendKey;

Did that introduced any problems with the existing tests? does it consider a breaking change? default behavior of sendKey changed, can it affect an existing user when upgrading?

Edit: @agrgr didn't notice that its a draft PR, ping me when its ready for a review and I'll have another look

[agrgr]

Did that introduced any problems with the existing tests? does it consider a breaking change? default behavior of sendKey changed, can it affect an existing user when upgrading?

The tests are ok. We agreed to move forward with this change because sendKey has already been true by default, so decided to align it for all default policies. What it does is bringing the primary key along with other bins in results.