Which connector?: Marketo

Additional details: Currently the Marketo REST API has a rate limit of 100 requests per 20 seconds. The Marketo connector has a fixed 90 requests per 20 second settings. When the Marketo connector runs, it can consume all of the bandwidth of the Marketo REST API leaving little to no room for other Marketo integrations, leading to 606 errors.

This 90 per 20 seconds should be configurable so that we can ensure compatibility with other integrations and reduce reported 606 errors.