Allow for Usage Analytics within self-contained multitenancy

[filski]

At the moment, the usage analytics functionality is only available for the system tenant.

You can monitor activity across all tenants from there.

However, this means that you cannot share usage analytics data with designers within the self-contained tenant.

[m3ac-johnsonb]

This would be amazing for my team because we use Sisense for customer facing and internal BI. We have a tenant for Internal BI and all of the customer facing stuff is in the main tenant. So we can't really share that information with the rest of the organization.