Connector for Secret Manager

# This workflow demonstrates how to use the Secret Manager connector:
# Retrieve a secret using three different methods
# Expected output: the secret data (thrice)
- init:
    assign:
      - project_id: ${sys.get_env("GOOGLE_CLOUD_PROJECT_ID")}
      - secret_id: "test-secret"  # Make sure you have this secret and it has a version of 1.
      - version: "1"
# Add data to an existing secret without base-64 encoding
- add_version_string:
    call: googleapis.secretmanager.v1.projects.secrets.addVersionString
    args:
      secret_id: ${secret_id}
      project_id: ${project_id}
      data: "a new secret"
# Retrieve the secret in string format without base-64 decoding and assume
# that the secret data is a valid UTF-8 string; if not, raise an error
- access_string_secret:
    call: googleapis.secretmanager.v1.projects.secrets.versions.accessString
    args:
      secret_id: ${secret_id}
      version: ${version}  # if not set, "latest" is used
      project_id: ${project_id}
    result: str_secret
# Retrieve the secret in string format without base-64 decoding
- access_secret:
    call: googleapis.secretmanager.v1.projects.secrets.versions.access
    args:
      name: ${"projects/" + project_id + "/secrets/" + secret_id + "/versions/" + version}
    result: base64_encoded_secret
# Retrieve the secret using positional arguments in an expression
- expression:
    assign:
      - secret_str_from_exp: ${googleapis.secretmanager.v1.projects.secrets.versions.accessString(secret_id, version, project_id)}
- the_end:
    return:
      - ${str_secret}
      - ${text.decode(base64.decode(base64_encoded_secret.payload.data))}
      - ${secret_str_from_exp}