CredentialStoreException: ELY09518: Automatic storage creation for the Credential Store is disabled in JBoss EAP 7.

Issue

• The below error message is seen in the server log when using Elytron for securing datasource passwords in domain mode:

2018-09-17 15:29:11,865 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-5) MSC000001: Failed to start service org.wildfly.security.credential-store.credential_store: org.jboss.msc.service.StartException in service org.wildfly.security.credential-store.ds_store: WFLYELY00004: Unable to start the service.
...
Caused by: org.wildfly.security.credential.store.CredentialStoreException: ELY09518: Automatic storage creation for the Credential Store is disabled "/path/to/credential_store.jceks"