Make microdep-map more dynamically read psconfig info

[ottojwittner]

Currently microdep-map only looks for a specific psconfig file named "microdep-tests.json" for test topology information. The microdep.db config database (which is applied by microdep-map) is created and populated based on "micordep-tests.json" on installation. When "micordep-tests.json" is changed a manual operation is required to update the database.

A more dynamic and "intelligent" system is desirable, i.e. something like

• a systemd based file watcher which trigger re-parsing of relevant psconfig files whenever they are updated
• a updated yaml-config system for microdep-map which enables default behavior to be presentation of all relevant psconfig specified measurement topologies, i.e. "groups" which have "tasks" set up to forward data via an rabbitmq archiver to "gap-ana" and "trace-ana" exchanges.

[ottojwittner]

This issue will become obsolete given that issue #17 is handled.