update helm chart to parameterise env vars

Makefile

charts/tango-operator/Chart.yaml

charts/tango-operator/templates/_helpers.tpl

charts/tango-operator/templates/databaseds-crd.yaml

charts/tango-operator/templates/deployment.yaml

charts/tango-operator/templates/deviceserver-crd.yaml

charts/tango-operator/templates/metrics-service.yaml

charts/tango-operator/templates/operator-config.yaml

...erator/templates/tango-operator-leader-election-rbac.yaml

...ngo-operator/templates/tango-operator-manager-config.yaml

...tango-operator/templates/tango-operator-manager-rbac.yaml

...perator/templates/tango-operator-metrics-reader-rbac.yaml

...s/tango-operator/templates/tango-operator-proxy-rbac.yaml

charts/tango-operator/values.yaml

config/helmchart/config.yaml

config/helmchart/kustomization.yaml

config/manager/kustomization.yaml

config/samples/all-in-one.yml

main.go

models/configs.go