server: Modify putTrace to support empty name

In the TSP the name parameter is not required, so the
TraceManagerServer should support it.

Signed-off-by: Arnaud Fiorini <fiorini.arnaud@gmail.com>
Change-Id: I1d70d4b2e3eb4fb91e8572f9bafec8c590f00c67
Reviewed-on: https://git.eclipse.org/r/c/tracecompass.incubator/org.eclipse.tracecompass.incubator/+/197644
Tested-by: Trace Compass Bot <tracecompass-bot@eclipse.org>
Tested-by: Bernd Hufmann <bernd.hufmann@ericsson.com>
Reviewed-by: Bernd Hufmann <bernd.hufmann@ericsson.com>
Reviewed-by: Patrick Tasse <patrick.tasse@gmail.com>

trace-server/org.eclipse.tracecompass.incubator.trace.server.jersey.rest.core/src/org/eclipse/tracecompass/incubator/internal/trace/server/jersey/rest/core/services/TraceManagerService.java

@@ -201,8 +201,9 @@ private static Response put(String path, String name, String typeID)
             return Response.status(Status.NOT_IMPLEMENTED).entity(NOT_SUPPORTED).build();
         }
         String traceType = traceTypes.get(0).getTraceTypeId();
+        String traceName = name == null ? Paths.get(path).getFileName().toString() : name;
 
-        IResource resource = getResource(path, name);
+        IResource resource = getResource(path, traceName);
         if (!resource.exists()) {
             if (!createResource(path, resource)) {
                 return Response.status(Status.INTERNAL_SERVER_ERROR).entity(TRACE_CREATION_FAILED).build();