pool: ftp mover suppresses including the IP address when out-of-storage

Motivation:

Allow the OutOfDiskException message to travel to the door without
adding the client IP address as this is unnecessary.

Modification:

Bypass exception wrapping for OutOfDiskException.

Result:

More concised error message propagated back to the client.

Target: master
Require-notes: yes
Require-book: no
Patch: https://rb.dcache.org/r/11102/
Acked-by: Albert Rossi

modules/dcache-ftp/src/main/java/org/dcache/pool/movers/GFtpProtocol_2_nio.java

@@ -45,6 +45,7 @@
 import org.dcache.ftp.data.Role;
 import org.dcache.pool.repository.FileStore;
 import org.dcache.pool.repository.FileRepositoryChannel;
+import org.dcache.pool.repository.OutOfDiskException;
 import org.dcache.pool.repository.RepositoryChannel;
 import org.dcache.util.Args;
 import org.dcache.util.Checksum;
@@ -241,6 +242,8 @@ public void transfer(RepositoryChannel fileChannel, Role role, Mode mode)
                 PortUnreachableException | UnknownHostException e) {
             throw Exceptions.wrap("Failed to connect " +
                     mode.getRemoteAddressDescription(), e, IOException.class);
+        } catch (OutOfDiskException e) {
+            throw e;
         } catch (IOException e) {
             throw Exceptions.wrap("Problem while connected to " +
                     mode.getRemoteAddressDescription(), e, IOException.class);