dstat: update recipe to use python3
dstat: update recipe to use python3

Update recipe to target python3 since python2 is EOL and has been
dropped from OE-Core.

Signed-off-by: Andrey Zhizhikin <288e5ce7581ec10ade4dc09f0fe51e9e90e0bd6f@gmail.com>
Signed-off-by: Khem Raj <729d64b6f67515e258459a5f6d20ec88b2caf8df@gmail.com>

moto-timo/meta-openembedded,moto-timo/meta-openembedded,VCTLabs/meta-openembedded,openembedded/meta-openembedded,openembedded/meta-openembedded,VCTLabs/meta-openembedded,rehsack/meta-openembedded,schnitzeltony/meta-openembedded,victronenergy/meta-openembedded,schnitzeltony/meta-openembedded,lgirdk/meta-openembedded,lgirdk/meta-openembedded,openembedded/meta-openembedded,VCTLabs/meta-openembedded,moto-timo/meta-openembedded,VCTLabs/meta-openembedded,rehsack/meta-openembedded,rehsack/meta-openembedded,schnitzeltony/meta-openembedded,rehsack/meta-openembedded,VCTLabs/meta-openembedded,rehsack/meta-openembedded,schnitzeltony/meta-openembedded,lgirdk/meta-openembedded,openembedded/meta-openembedded,lgirdk/meta-openembedded,VCTLabs/meta-openembedded,schnitzeltony/meta-openembedded,openembedded/meta-openembedded,lgirdk/meta-openembedded,rehsack/meta-openembedded,victronenergy/meta-openembedded,moto-timo/meta-openembedded,victronenergy/meta-openembedded,openembedded/meta-openembedded,openembedded/meta-openembedded,moto-timo/meta-openembedded,schnitzeltony/meta-openembedded,victronenergy/meta-openembedded,victronenergy/meta-openembedded,victronenergy/meta-openembedded,rehsack/meta-openembedded,VCTLabs/meta-openembedded,schnitzeltony/meta-openembedded,lgirdk/meta-openembedded,victronenergy/meta-openembedded,openembedded/meta-openembedded,VCTLabs/meta-openembedded,lgirdk/meta-openembedded