GONRG-6237: Update variants for issuing TLS certificates

Volodymyr Pienskoi [EPAM / GCP]requested to merge
GONRG-6237_Adding_self-generated_certificate_does_not_work into master
  • Renamed ingress-tls secret(which contains certificate issued for osdu.<domain>) and credentialName value to osdu-ingress-tls and osduCredentialName to match other credentials.
  • Updated parts in all READMEs mentioning credentialName
  • Refactored cert-manager templates to Helm chart and updated to 4 certificates.
  • Added generate_self_signed_certs variable to add possibility to disable default creating of self-signed certificates in onprem_cluster module.
  • Updated openssl, certbot and cert-manager instructions in onprem_cluster README to create 4 certificates.
  • Updated DF Helm scheduled pipeline to create self-signed certs with correct domain using Terraform.
Edited by Volodymyr Pienskoi [EPAM / GCP]

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