[IMPROVE] Add duration threshold to zookeeper detectors

[freezeeedos]

What is the module?
smart-agent_zookeeper

What is the detector?
zookeeper health

Is your improvement related to a known monitoring limitations? Please describe.
Currently, there is not duration parameter for the alert threshold

Describe the solution you'd like
Add a new variable, something like zookeeper_health_duration_threshold to the signal flow

Files that would be affected:

modules/smart-agent_zookeeper/detectors-zookeeper.tf

modules/smart-agent_zookeeper/variables.tf

Final result would be something like:
detect(when(signal != 1, lasting = '15m')).publish('CRIT')

This could be applied to the latency detector as well