Allow for injection of capabilies into the docker image

We need to provide a way to inject capabilies that are defined at runtime by the server. Currently these values are defined in a property, but we need to be able to take an environment variable called VALVE_CAPABILITIES and read in the following schema data:

```json
{
"GrowingTimeoutPeriod": {
"Log": 600,
"Trajectory": 1800,
"MudLog": 1800
},
"WMLS_GetFromStore": {
"MaxDataNodes": {
"Log": 50000,
"Trajectory": 1400,
"MudLog": 400
},
"maxDataPoints": 50000
},
"WMLS_AddToStore": {
"MaxDataNodes": {
"Log": 10000,
"Trajectory": 700,
"MudLog": 300
},
"maxDataPoints": 50000
},
"WMLS_UpdateInStore": {
"MaxDataNodes": {
"Log": 10000,
"Trajectory": 700,
"MudLog": 300
},
"maxDataPoints": 50000
}
}
```