Broken Docker Image Webconsole access

Between Version 6.2.5 and 6.2.6/6.2.7 there are some undocumented changes in the default access settings on the webconsole.

**Reproduce:**

```
docker run --rm -p 61616:61616 -p 8161:8161 apache/activemq:6.2.5
```
Browse http://localhost:8161/ and Login with "admin/***"
-> everythings works fine

```
docker run --rm -p 61616:61616 -p 8161:8161 apache/activemq:6.2.7
```
Browse http://localhost:8161/ and getting **403 Forbidden**
-> not as expected

Start by running the two Docker commands from the issue and comparing webconsole access between ActiveMQ 6.2.5 and 6.2.7. Trace the default access configuration used by the Docker image and identify the change causing the 403; done means the expected admin login works or the changed behavior is documented.

Written by the indexing model from the issue text.