Adding a notice about the use of anonymous users

Summary:
Added a notice about use of anonymnous user account for mysql in
the default.pp manifest.

Test Plan:
Make sure markdown appears as intended on a mark down
editor/viewer

Reviewers: jevripio

Reviewed By: jevripio

CC: phab

Differential Revision: https://sibld.phab.dev.bloomberg.com/D141
Refactor aoncmd_query.process, split out functions

This function has grown too complex, split it out into separate
functions to reduce complexity.

Test Plan:
$ ./precommit.sh
testbed/arcyon $ ./exercise_arcyon.sh
various scripts in /examples/arcyon