gwistat updates

make some updates to gw_ifo_stat program used for gwistat at online.ligo.org:

• reduce time between storing data
• add logic to write data immediately upon state change
• fix the bits used to account for differences between KAGRA and HLV

added 3 commits

• ba151e54 - 1 commit from branch master
• c90fe4cc - gstlal_ifo_stat: bug fixes; write to influx upon state change
• 5c372bcf - gstlal_ifo_stat: use 0th bit for KAGRA, 0th and 1st bit for HLV

Compare with previous version

enabled an automatic merge when the pipeline for 5c372bcf succeeds

merged