Secret creation and existingSecret

[michelefa1988]

Problem It seems that we are unable to grab certain credentials (e.g Azure credentials) from an existingSecret and at the same time create a secret on helm chart deployment for other secrets which do not exist (e.g BASIC_AUTH_USER and BASIC_AUTH_PASS)

Expected Criteria The YAML below will use chartmuseum-azstorage-secret for secrets but authentication will be enabled for the given username and password.

secret:
    BASIC_AUTH_USER: myUserName
    BASIC_AUTH_PASS: mySecurePassword
  existingSecret: chartmuseum-azstorage-secret
  # Stores Enviromnt Variable to secret key name mappings
  existingSecretMappings:
    AZURE_STORAGE_ACCOUNT:  AZURE_STORAGE_ACCOUNT
    AZURE_STORAGE_ACCESS_KEY:  AZURE_STORAGE_ACCESS_KEY`

Current Bug Deploying the YAML below will mount the secret mapping but the BASIC_AUTH_USER and BASIC_AUTH_PASS will be ignored.