LU-17131 ldiskfs: Add Ubuntu 20.04.5 release 5.15 kernel

LU-17131 ldiskfs: Add Ubuntu 20.04.5 release 5.15 kernel

Add support for Ubuntu 20.04.5 5.15 kernel similar to el9.2
with updated patches:
    ext4-corrupted-inode-block-bitmaps-handling-patches.patch
    ext4-data-in-dirent.patch
    ext4-dont-check-before-replay.patch
    ext4-inode-version.patch
    ext4-mballoc-extra-checks.patch
    ext4-prealloc.patch
    ext4-filename-encode.patch

Tested with tag Ubuntu-hwe-5.15-5.15.0-91.101_20.04.1

Test-Parameters: trivial
Signed-off-by: Shaun Tancheff <shaun.tancheff@hpe.com>
Change-Id: Ic1b4b0f25a9ac984186cf4f37b5a73d93af93ebd
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/52414
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Tested-by: James Simmons <jsimmons@infradead.org>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Artem Blagodarenko <ablagodarenko@ddn.com>
Reviewed-by: James Simmons <jsimmons@infradead.org>
Reviewed-by: Oleg Drokin <green@whamcloud.com>