Adjust python module search path to avoid picking up pre-existing pyserial/esptool instead of one under tools/ (#5854)
Adjust python module search path to avoid picking up pre-existing pyserial/esptool instead of one under tools/ (#5854)


esp8266/Arduino,Lan-Hekary/Arduino,sticilface/Arduino,Lan-Hekary/Arduino,Lan-Hekary/Arduino,esp8266/Arduino,esp8266/Arduino,sticilface/Arduino,sticilface/Arduino,sticilface/Arduino,Lan-Hekary/Arduino,esp8266/Arduino,Lan-Hekary/Arduino,sticilface/Arduino,esp8266/Arduino