[tick] FEATBL-1126 Feat: Add auto-healing of ElasticSearch on disk usage
When elasticsearch reaches disk usage above the watermark level, all indices
are marked read-only.
Adds a trigger system in kapacitor to mark all indices as writable again when disk free
is above the default ElasticSearch watermark level.
Adds an ElasticSearch cluster health alert if the cluster status is YELLOW, or RED.