At present, the Fail-Fast Threshold criteria can only be predefined.

We would like to have the ability to configure it as a user input at runtime or expression

```yaml

metricPacks:

- identifier: Custom

metricThresholds:

- type: FailImmediately

spec:

action: FailImmediately

spec: {}

criteria:

type: Absolute

spec:

greaterThan: 1000 # This needs to User input

metricType: Custom

metricName: "Response Time "

groupName: DT

```