nfs/glusterfs: is_mounted fixes

The parse_proc_mounts change made the glusterfs is_mounted
check fail (causing it to be shown as inactive on the GUI).
The NFS check was stricter (not allowing a trailing / in the
source anymore).

PVE/Storage/GlusterfsPlugin.pm

@@ -74,7 +74,7 @@ sub glusterfs_is_mounted {
 
     return $mountpoint if grep {
 	$_->[2] eq 'fuse.glusterfs' &&
-	$_->[0] eq $volume &&
+	$_->[0] =~ /^\S+:\Q$volume\E$/ &&
 	$_->[1] eq $mountpoint
     } @$mountdata;
     return undef;

PVE/Storage/NFSPlugin.pm

@@ -23,7 +23,7 @@ sub nfs_is_mounted {
     $mountdata = PVE::ProcFSTools::parse_proc_mounts() if !$mountdata;
     return $mountpoint if grep {
 	$_->[2] eq 'nfs' &&
-	$_->[0] eq $source &&
+	$_->[0] =~ m|^\Q$source\E/?$| &&
 	$_->[1] eq $mountpoint
     } @$mountdata;
     return undef;