Update to new schema revision; pre-load schema module

Changes:
- Avoid logging country / city if values are present but empty.
- Ensure 'schema.HttpsSupport' is loaded before ext.coreEvents.httpsSupport.
- Bump schema revision to 5733378.

Change-Id: I362c5975b1075f22b666b9b67c0a8c1434b5372c