EAP 6 "JBWEB003043: ... No Certificate file specified or invalid file format" when using native libraries

Issue

• https connector initialization failed when native=true. We have the following error when we try to use the native libraries :

ERROR [org.apache.coyote.http11] (MSC service thread 1-4) [] [] [] JBWEB003043: Error initializing endpoint: java.lang.Exception: No Certificate file specified or invalid file format
 at org.apache.tomcat.jni.SSLContext.setCertificate(Native Method) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
 at org.apache.tomcat.util.net.AprEndpoint.init(AprEndpoint.java:649) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
 at org.apache.coyote.http11.Http11AprProtocol.init(Http11AprProtocol.java:104) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
.....
Caused by: LifecycleException:  JBWEB000023: Protocol handler initialization failed at org.apache.catalina.connector.Connector.init(Connector.java:986) 

The error appears only when we set native=true in the virtual host.
The configuration contains

<subsystem xmlns="urn:jboss:domain:web:1.4"
  default-virtual-server="default-host" native="true">
     <connector name="https" protocol="HTTP/1.1" scheme="https"
    socket-binding="https" secure="true">
    <ssl name="https" 
        password="${VAULT::Keystore::serverskeystore::MUYx........."
        certificate-key-file="${test.jboss.web.ssl.certificate-key-file}"
        verify-client="true" 
        ca-certificate-file="${test.jboss.web.ssl.certificate-ca-file}" ></ssl>
     </connector>
     <virtual-server name="default-host" enable-welcome-root="true">
    <alias name="localhost" ></alias>
    <alias name="example.com" ></alias>
     </virtual-server>
.. ..
</subsystem>