Today, the inject_security_token.js is used to inject signed security token and help us to simulate the tenant requests from mongoq. 

In this ticket, we need to:

• rename the inject_security_token.js to be simulate_mongoq.js
• make it also support to inject unsigned security token if required by the test suites.
• change the native_tenant_data_isolation_with_dollar_tenant_jscore_passthrough.yml to use this override instead of the 'inject_dollar_tenant.js' and rename the yml file to be `multitenancy_with_mongoq_unsigned_token_jscore_passthrough.yml'.