Agent sessions are constrained by Session Quota

Bug description

When session quotas are enabled, the number of web agents sessions is limited to the number of Active User Sessions

How to reproduce the issue

1. Install AM 6.5.0.1
2. Enable Global Service Session Quota Constraints.
3. Set Resulting behavior if session quota exhausted to DENY_ACCESS
4. Create a realm, Add the Session Service  
5. Create a Web Agent profile in the realm.
6. Enable SSO Only Mode for the Agent profile.
7. Install Apache 2.4 and Web agent 5.5.1.0 specifying the realm.
8. Run a simple load test on the web server requesting pages.

Expected behaviour

Responses are redirects for authentication

Current behaviour

Responses will start to return HTTP 403 Forbidden

Work around

Not tested - Configure the Web Agent profile in a separate realm with Active User Sessions configured with a value sufficient to allow the required number of agent logins calculated from Apache mpm_worker_module configuration.

Code analysis

None