Maven profile for building the local server without requiring AWS credentials

[cjkent]

Running a local server using mvn exec:exec requires running mvn install first. Currently the install step builds the CloudFormation files. These use the account ID in the bucket name for static files which requires a call to AWS.

If you only want to run a local server this is annoying. Disabling the Osiris pluin in core/pom.xml fixes the problem and allows you to run mvn install without any credentials. This could be done in a profile to allow you to build the project specifically for running a local server.