Policy (Recommended): When specified as part of the OpenID provider configuration, all users authenticating via this provider are authorized to (only) use the specified role policy. The policy to associate with such users is specified via the `role_policy` configuration parameter or the `MINIO_IDENTITY_OPENID_ROLE_POLICY` environment variable. The value is a comma-separated list of IAM access policy names already defined in the server. In this situation, the server prints a role ARN at startup that...

		"client_id=minio-client-app",
		"client_secret=minio-client-app-secret",
		"scopes=openid,groups",
		"redirect_uri=http://127.0.0.1:10000/oauth_callback",
	}
	if rolePolicy != "" {
		configCmds = append(configCmds, fmt.Sprintf("role_policy=%s", rolePolicy))
	} else {
		configCmds = append(configCmds, "claim_name=groups")
	}
	_, err := s.adm.SetConfigKV(ctx, strings.Join(configCmds, " "))
	if err != nil {

	roleArn, err := arn.Parse(arnStr)
	if err != nil {
		return arn.ARN{}, "", fmt.Errorf("RoleARN parse err: %v", err)
	}
	rolePolicy, ok := sys.rolesMap[roleArn]
	if !ok {
		return arn.ARN{}, "", fmt.Errorf("RoleARN %s is not defined.", arnStr)
	}
	return roleArn, rolePolicy, nil
}

// DeletePolicy - deletes a canned policy from backend. `notifyPeers` is true