Version v0.2.1

• Used default namespace and changed NAMESPACE to CLUSTER
• Fixed possible hidden issues with config file
• Fixed problem with port presented as the secret name
• Used database ConfigMap for host/port
• Added nginx annotations example
• Added default service account
• Extended TLS secret name block
• Added TLS hosts
• Changed ingress version to networking.k8s.io/v1 (Minimal version of Kubernetes: v1.19)