Senaite.LIS2a both 1x and 2x

Hi @ramonski @Espurna

In Senaite.Lis2a, in api/message.py

the regex for checking Header seems not working as usually header message from instrument start with 1H,
After i modified below scripts the modules works ok

1H|^&||||||||||P|LIS2-A2|19890327141200