SSDM-13154 : New DSS Server proxy layers, adding basic tests for the api server

afs-server/build.gradle

...rc/main/java/ch/ethz/sis/afsserver/api/OperationsAPI.java

...src/main/java/ch/ethz/sis/afsserver/server/APIServer.java

...in/java/ch/ethz/sis/afsserver/server/ThrowableReason.java

...orker/providers/impl/DummyAuthenticationInfoProvider.java

.../ethz/sis/afsserver/worker/proxy/AuthenticationProxy.java

...ver/src/test/java/ch/ethz/sis/afsserver/AbstractTest.java

...java/ch/ethz/sis/afsserver/ServerClientEnvironmentFS.java

...server/src/test/java/ch/ethz/sis/afsserver/TestSuite.java

.../ch/ethz/sis/afsserver/core/AbstractPublicAPIWrapper.java

...c/test/java/ch/ethz/sis/afsserver/core/PublicApiTest.java

...c/test/java/ch/ethz/sis/afsserver/impl/ApiServerTest.java

...a/ch/ethz/sis/afsserver/impl/PublicAPIAdapterWrapper.java

afs/build.gradle