Update jaxrs tests to support Tomcat 9.0

The org.apache.catalina Context addServletMapping method was deprecated in Tomcat 8 and removed in Tomcat 9.0.

To be able to run the tests with Tomcat 9 update addServletMapping to addServletMappingDecoded

From the JavaDoc

/**

• Add a new servlet mapping, replacing any existing mapping for
• the specified pattern.{{ *}}
• @param pattern URL pattern to be mapped. The pattern will be % decoded
• using UTF-8
• @param name Name of the corresponding servlet to execute{{ *}}
• @deprecated Will be removed in Tomcat 9. Use
• {{ {@link #addServletMappingDecoded(String, String)}

  }}{{ */}}{{ @Deprecated}}{{ public void addServletMapping(String pattern, String name);}}