Hidden password from /proc/{pid}/cmdline or ps command output #837
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when user input password from cli, hidden the password from ps
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Description
This PR [briefly explain what it does]
If the user sets the password with a command-line argument, when gh-ost running, another user can get the password from /proc/{pid}/cmdline file or from
pscommand. It seems to be not secure. Asmysqlclient does, it will be more secure to replace the password with several x letters.script/cibuildreturns with no formatting errors, build errors or unit test errors.