Move Query Language (RSQL) in separate package and add Entity Matcher (#2531)

* Move Query Language (RSQL) in separate package - hawkbit-repository-ql
* Add Entity Matcher which match an entity object agains filter
* Spec to string utils now in runtime (as a library) - could be used in tests or to dump something in runtimes
* Move eclipselink/hibernate profiles in new QL module, this way provided / set to hawkbit-repository-jpa
* Remove unused javax.el imports

hawkbit-ddi/hawkbit-ddi-resource/pom.xml

@@ -70,11 +70,6 @@
             <classifier>tests</classifier>
             <scope>test</scope>
         </dependency>
-        <dependency>
-            <groupId>javax.el</groupId>
-            <artifactId>javax.el-api</artifactId>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>org.springframework.security</groupId>
             <artifactId>spring-security-config</artifactId>