Online diagnostic tool

Create an online diagnostic tool making use of the current services deployed as part of the MVP (elastic,kibana,grafana etc) in order to assist in the analysis interconnected problems difficult to debug by looking at a single component.

This tool should have the absolute minimum features available to answer only the questions needed for assisting in resolving current technical debt (e.g. https://jira.skatelescope.org/browse/SP-1091).

This means the ability to:

1. For a predefined subset of tango devices collect their attribute values and over  a predefined time period 
2. collect log messages for that same set of devices and display over a predefined time period

The quality of the information need only be of that standard so that it can verify or deny key "hypothetical questions" about possible error e.g.:

Do state machines of higher-level systems aggregate correctly the state of lower-level systems?

What error messages get generate in logs when tests are run (both during failures and both during successes)

Does the state machine change or behavior change when the speed of commands change?

Does state machine behavior change when infrastructure becomes overloaded?

It is very important that the tool focuses on accuracy rather than preciseness to make sure that answers to questions and diagnosis of problems can be done in a quick manner without the need to do work taking a long time before delivering results.