Elastic Cloud on Kubernetes version 1.2.0

Add additional Kibana encryption keys #3285 (issue: #2279)
Name transport service port #3233
Use _cluster/health API during rolling upgrades #3195 (issue: #3070)
Set resource limits for the keystore init container #3193 (issue: #2660)
Relax pod disruption budget for single node clusters #3167
Switch operator base image to Distroless #3161
Introduce a restricted role for APM agent configuration #3155
Do not stop running trial even when ECK is not in trial mode #3150 (issue: #3141)
Add licence usage metrics #3145 (issue: #3140)
Add manifest generator #3124 (issue: #2406)
Add support for APM Agent Config Management #3043 (issue: #1264)
Add PodTemplate semantic validation for Elasticsearch #3020 (issue: #2266)
Add port to nodeSet headless service #3011 (issue: #2843)
Name the webhook service port #2829 (issue: #2771)
Restrict APM Server user role #2777 (issue: #2661)

Do not manage keystore if already initialized #3295 (issue: #3294)
Only provision Enterprise licenses as of 7.8.1 #3273 (issue: #3272)
Replace the license observer by a sync call in the reconciliation #3165 (issue: #3163)
Preserve extra annotations and labels on StatefulSet updates #3149 (issue: #3147)
Fix APM Server user role #3010 (issue: #2977)
Fix user http tls certificate watch leak #2975 (issue: #249)