LU-17117 build: update version to 1.47.0-wc5

LU-17117 build: update version to 1.47.0-wc5

b67310af4 LU-17117 journal: increase revoke block hash size
3ff538c1d LU-17117 misc: deduplicate log2/log10 functions
27d5daaad LU-15002 mke2fs: try to pack the GDT blocks together
03a6a831c LU-15002 mke2fs: do not set the BLOCK_UNINIT on groups has GDT
6e18f9e2c LU-15002 mke2fs: set free blocks accurately for groups has GDT
37440af03 LU-17117 debugfs: allow debugfs to disable MMP directly
d7e9c047d LU-15002 mke2fs: batch zeroing inode table
eb67ae2ec LU-15002 e2fsck: check all sparse_super backups
a59ac3441 LU-16750 tune2fs: add "-E iops" to set/clear IOPS groups
99deb0b3c LU-17028 build: add support for openEuler 20.03 LTS
4e82819ed LU-16169 e2fsck: improve parallel thread balance
3bf271a76 LU-14712 e2fsprogs: support EXT2_FLAG_BG_TRIMMED and EXT2_FLAGS_TRACK_TRIM

Change-Id: I8894011d9e63695c77b10c2460c826f5c1f28cab
Signed-off-by: Li Dongyang <dongyangli@ddn.com>