Added security attributes

[gabriellandau]

Change Summary

Add process.Ext.token.security_attributes, which contains the names of all the values in the TokenSecurityAttributes information class. Here's code demonstrating how to collect it.

Sample values

"process": {
    "Ext": {
        "token": {
            "security_attributes": [
                "TSA://ProcUnique",
                "LUA://DecHdAutoAp"
            ]
        }
    }
}

For mapping changes:

• I ran make after making the schema changes, and committed any generated files (in schema/, generated/)
• Does this field need to be "exceptionable"? (no longer specified in this package, this is now tracked in Kibana)

[gabriellandau]

Thanks @Samirbous @jonathan-buttner