Xtrabackup 8 compatibility#49

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romulus-ai wants to merge 4 commits intodotmanila:masterfrom

romulus-ai:xtrabackup_8_compatibility

Commits on Apr 26, 2022

adds two more options and makes it xtrabackup 8 compatible
Thomas Bruckmann
committed
extends to make it python3 compatible and works smoother without innobackupex installed
Thomas Bruckmann
committed
updates readme
Thomas Bruckmann
committed

Commits on Apr 29, 2022

fix missing rebuild-threads option
Thomas Bruckmann
committed