Avoid direct usage of impl class

Conflicts:
	components/camel-jetty/src/test/java/org/apache/camel/component/jetty/ExplicitJettyRouteTest.java
	components/camel-jetty/src/test/java/org/apache/camel/component/jetty/HttpsRouteAliasTest.java
	components/camel-jetty/src/test/java/org/apache/camel/component/jetty/HttpsRouteWithSslConnectorPropertiesTest.java