chore: revert chart version bump & add leaseDuration default durantion

Author: gjbravi

helm/aws-load-balancer-controller/Chart.yaml

@@ -1,7 +1,7 @@
 apiVersion: v2
 name: aws-load-balancer-controller
 description: AWS Load Balancer Controller Helm chart for Kubernetes
-version: 1.8.0
+version: 1.7.1
 appVersion: v2.7.0
 home: https://github.com/aws/eks-charts
 icon: https://raw.githubusercontent.com/aws/eks-charts/master/docs/logo/aws.png

helm/aws-load-balancer-controller/values.yaml

@@ -425,7 +425,7 @@ serviceTargetENISGTags:
 loadBalancerClass:
 
 # Specifies the duration that non-leader candidates will wait to force acquire leadership. (default 15s)
-leaseDuration:
+leaseDuration: 15s
 
 # creator will disable helm default labels, so you can only add yours
 # creator: "me"