libs: update to nfs4j-0.8.1

Changelog for nfs4j-0.8.0..nfs4j-0.8.1
    * [a041674] nfsv41: client: do not send getattr to DS
    * [2b6703e] test: suppress deprecation warning
    * [3a33b4c] acl: fix permission check on listdirectory
    * [e6f0783] mount: add support for symlinks

Ticket: #8410
Acked-by: Paul Millar
Target: master, 2.10, 2.9, 2.8, 2.7, 2.6
Require-book: no
Require-notes: yes
(cherry picked from commit 95a193a)
Signed-off-by: Tigran Mkrtchyan <tigran.mkrtchyan@desy.de>

pom.xml

@@ -785,7 +785,7 @@
         <dependency>
             <groupId>org.dcache</groupId>
             <artifactId>nfs4j-core</artifactId>
-            <version>0.8.0</version>
+            <version>0.8.1</version>
             <exclusions>
                 <exclusion>
                     <groupId>org.dcache.chimera</groupId>