Consolidated paths for different certificate delivery methods.

sts-agent/compose.yaml

@@ -6,7 +6,6 @@ services:
     volumes:
       - /mnt/ext-storage:/mnt/ext-storage:ro
       - /etc/sts-agent:/etc/sts-agent:ro
-      - /var/lib/vault-cert/wif:/var/lib/vault-cert/wif:ro
     environment:
       GOOGLE_APPLICATION_CREDENTIALS: /etc/sts-agent/cred.json
       GOOGLE_API_CERTIFICATE_CONFIG: /etc/sts-agent/certificate_config.json