fix: use gethostname() to set host attribute as this works on a cluster whereas reading the COMPUTERNAME env var doesn't.

fix: use proper hostplatform variable, now host attributes really aren't empty on windows recipes.

Merge

fix: make sure host attribute is set rather than blank in logs on windows by using the env var 'COMPUTERNAME' instead of 'HOSTNAME'. Thus make it less difficult to order recipes in the log by time.