exports: fix FsExport#toString output

fix

/data: 10.1.0.1(RW,root_squash,noacl,sec=SYSsecure,,dcap,pnfs,anonuid=1001,anongid=65534):idx=2eefc9
                                                 ^^^^^^
to

/data: 10.1.0.1(RW,root_squash,noacl,sec=SYS,secure,dcap,pnfs,anonuid=1001,anongid=65534):idx=2eefc9

Acked-by: Lea Morschel
Target: master

core/src/main/java/org/dcache/nfs/FsExport.java

@@ -158,8 +158,8 @@ public class FsExport {
                 .append(_withAcl ? "acl" : "noacl")
                 .append(',')
                 .append("sec=").append(_sec)
-                .append(_requirePrivilegedClientPort ? "secure" : "insecure")
                 .append(",")
+                .append(_requirePrivilegedClientPort ? "secure" : "insecure")
 		.append(',')
 		.append(_withDcap ? "dcap" : "no_dcap")
                 .append(',')