LU-8465 e2fsck: move some fixes out of parallel pthreads

LU-8465 e2fsck: move some fixes out of parallel pthreads

We could only use @found_map_block to find free blocks
after we have collectd all used blocks, so something like
handle_fs_bad_blocks(), ext2fs_create_resize_inode(),
e2fsck_pass1_dupblocks() really should be handled after
all threads has been finished.

Change-Id: I9b29782f4b055ee4cb52248a28381ed601891ebd
Signed-off-by: Wang Shilong <wshilong@ddn.com>
Reviewed-on: https://review.whamcloud.com/37856
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>