LoadRunner - ability to override baseUri in generated scripts

[sergeytrasko]

Scenario: LR script is generated for one environment, but the tests are executed against different environment.

E.g. generated against http://localhost:8080, but executed against http://app-perf.mycompany.com

Currently there should be a manual step to replace one URL with another in generated files. It would be good to have some configuration property (like 'loadRunner.targetBaseUri)