add $http_origin to fastcgi_cache_key
add $http_origin to fastcgi_cache_key

Wordpress API adds the origin to CORS headers, if requesting from two
different applications while the cache is hot delivers the wrong headers
unless http_origin is added to the cache key.

proteusthemes/pt-ops,kalenjohnson/trellis,Twansparant/trellis-db-sync,Twansparant/trellis-db-sync,jeffstieler/bedrock-ansible,partounian/trellis,fullyint/trellis,alan-c/trellis,fullyint/trellis,cimocimocimo/cimo-wordpress-server,cimocimocimo/cimo-wordpress-server,partounian/trellis,jvandijk/epwp-trellis,buluma/trellis,partounian/trellis,Twansparant/trellis-db-sync,NicBeltramelli/trellis,mAAdhaTTah/bedrock-ansible,roots/trellis,cimocimocimo/cimo-wordpress-server,cimocimocimo/cimo-wordpress-server,pressbooks/trellis,kalenjohnson/trellis,roots/bedrock-ansible,jvandijk/epwp-trellis,newtonne/trellis,alan-c/trellis,newtonne/trellis,proteusthemes/pt-ops,proteusthemes/pt-ops,mAAdhaTTah/bedrock-ansible,buluma/trellis,NicBeltramelli/trellis,jeffstieler/bedrock-ansible,roots/trellis,kalenjohnson/trellis,pressbooks/trellis,mAAdhaTTah/bedrock-ansible,kalenjohnson/trellis,buluma/trellis,mAAdhaTTah/bedrock-ansible,jeffstieler/bedrock-ansible,buluma/trellis,partounian/trellis,fullyint/trellis,NicBeltramelli/trellis,newtonne/trellis,NicBeltramelli/trellis,fullyint/trellis,Twansparant/trellis-db-sync,roots/bedrock-ansible