bump to v1.8.2

.github/ISSUE_TEMPLATE/postgres-operator-issue-template.md

README.md

charts/postgres-operator-ui/Chart.yaml

charts/postgres-operator-ui/index.yaml

charts/postgres-operator-ui/postgres-operator-ui-1.8.2.tgz

charts/postgres-operator-ui/values.yaml

charts/postgres-operator/Chart.yaml

charts/postgres-operator/crds/operatorconfigurations.yaml

charts/postgres-operator/index.yaml

charts/postgres-operator/postgres-operator-1.8.2.tgz

charts/postgres-operator/values.yaml

docs/reference/operator_parameters.md

manifests/complete-postgres-manifest.yaml

manifests/configmap.yaml

manifests/operatorconfiguration.crd.yaml

manifests/postgres-operator.yaml

manifests/postgresql-operator-default-configuration.yaml

pkg/controller/operator_config.go

pkg/util/config/config.go

ui/operator_ui/static/styles.css