Indicate Checks interdependence

[elauria]

As a ZMON User
I want to be notified in the UI when a Check consumes/provides data being provided/consumed by another Check (i.e. via KairosDB),
in order to be aware of possible implications when modifying Checks.

[bocytko]

Given:

• check A with no alerts
• check B accessing data from A with active alerts

Besides dependency indication - another possibility is to still keep evaluating the check A, even though it has no alerts itself, but a dependent check B has active alerts. I don't know how complex and expensive such a transitive relation would be.

[laceyallyn]

Given that Check A is written to collect some data
And Check B is written to consume that data

When I update Check A
Then I should see an indication that Check B could be affected (so that I don't mistakenly break Check B)
and
When all alerts are removed from Check A
Then I should see an indication that Check B could be affected (so that Check B does not fail)
(or checks shouldn't require alerts to fire?)