fix mic run error in mic-bootstrap

fix mic run error in mic-bootstrap
The related code is changed in python3.10 in ubuntu22.04 for loggigng module.
once using --logfile=xxx option, it will show error: AttributeError: 'MicFileHandler' object has no attribute '_builtin_open'
this attribute is in FileHanderler, should declare it in child class MicFileHandler. Because in it, it use Handler to initialize.
Change-Id: I6eda4c1adadc73adc888262909fc825138c3af76
Signed-off-by: biao716.wang <biao716.wang@samsung.com>