is_any_mds_active: check if state is correct

a MDS gets transferred to the active MDS info once it got selected as
active, not once it really _is_ active, it can be there in the
'up:creating' state. So ensure that a MDS with 'u:active' could be
found

Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>

PVE/CephTools.pm

@@ -379,7 +379,11 @@ sub is_any_mds_active {
     }
     my $active_mds = $fs->[0]->{mdsmap}->{info};
 
-    return scalar(keys %$active_mds) > 0;
+    for my $mds (values %$active_mds) {
+	return 1 if $mds->{state} eq 'up:active';
+    }
+
+    return 0;
 }
 
 sub create_mds {