fstests: Fix golden output for the new btrfs device replace tests

From: Filipe Manana <[email protected]>

As a workaround for a regression in the uuid filter introduced by a092363bbdfa ("xfs: test changing UUID on V5 superblock"), the btrfs 100 and 101 tests included an extra white space before the uuid in their golden output files. However commit 48613832ad11 ("_filter_uuid: Fix output regression for btrfs/006"), which came later, fixed the regression in the uuid filter therefore making btrfs/100 and btrfs/101 fail due to the extra space in their expected golden output files. So just remove the extra white spaces from the golden output files.

  $ ./check btrfs/100
  FSTYP         -- btrfs
  PLATFORM      -- Linux/x86_64 debian3 4.2.0-rc5-btrfs-next-13+
  MKFS_OPTIONS  -- /dev/sdc
  MOUNT_OPTIONS -- /dev/sdc /home/fdmanana/btrfs-tests/scratch_1

btrfs/100 4s ... - output mismatch (see .../results//btrfs/100.out.bad)
--- tests/btrfs/100.out 2015-09-22 02:56:35.031470334 +0100
+++ /home/fdmanana/git/hub/xfstests/results//btrfs/100.out.bad... @@ -1,10 +1,10 @@
QA output created by 100
-Label: none uuid: <UUID>
+Label: none uuid: <UUID>
Total devices <NUM> FS bytes used <SIZE>
devid <DEVID> size <SIZE> used <SIZE> path SCRATCH_DEV devid <DEVID> size <SIZE> used <SIZE> path /dev/mapper/error-test

(...)
Failures: btrfs/100
Failed 1 of 1 tests

---
 tests/btrfs/100.out | 4 ++--
 tests/btrfs/101.out | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

index 2eeefa4..aa49291 100644
@@ -1,10 +1,10 @@
 QA output created by 100
-Label: none  uuid:  <UUID>
+Label: none  uuid: <UUID>
 	Total devices <NUM> FS bytes used <SIZE>
 	devid <DEVID> size <SIZE> used <SIZE> path SCRATCH_DEV
 	devid <DEVID> size <SIZE> used <SIZE> path /dev/mapper/error-test
 
-Label: none  uuid:  <UUID>
+Label: none  uuid: <UUID>
 	Total devices <NUM> FS bytes used <SIZE>
 	devid <DEVID> size <SIZE> used <SIZE> path SCRATCH_DEV
 

index 4621902..e1b88c2 100644
@@ -1,10 +1,10 @@
 QA output created by 101
-Label: none  uuid:  <UUID>
+Label: none  uuid: <UUID>
 	Total devices <NUM> FS bytes used <SIZE>
 	devid <DEVID> size <SIZE> used <SIZE> path SCRATCH_DEV
 	devid <DEVID> size <SIZE> used <SIZE> path /dev/mapper/error-test
 
-Label: none  uuid:  <UUID>
+Label: none  uuid: <UUID>
 	Total devices <NUM> FS bytes used <SIZE>
 	devid <DEVID> size <SIZE> used <SIZE> path SCRATCH_DEV
 

2.1.3