* create contextual log context provider
* use contextual provider in scheduler
* init logger in the package
* use context for log context
* use context in state manager
* Define EvaluationContext
* Refactor ConditionEval to use new context struct
* Refactor QueriesAndExpressionsEval to use EvaluationContext
* Remove dead field from AlertExecCtx
* Refactor Validate to use EvaluationContext
* Get rid of privately used AlertExecCtx
* Move EvaluationContext to new file and add helper
* Add builder pattern and bind rule info to context
* Extract header logic and add rule UID header
* Fix missing call
This commit is one of two commits to make the data frames for all queries and expressions in an alert rule available to the state package for rendering a graph. It renames Result to Condition, and creates an additional field called
Results that is a map of Ref ID to data.Frames.
Yuriy Tseretyan
Alexander Weaver
George Robinson
Kyle Brandt