Expose current environment as $environment variable
Expose current environment as $environment variable

Fixes https://github.com/shoreditch-ops/artillery/issues/195

hassy/artillery-core,shoreditch-ops/artillery,shoreditch-ops/artillery,shoreditch-ops/artillery-core,hassy/artillery-core,erikerikson/artillery-core,erikerikson/artillery-core,hassy/artillery,hassy/artillery,hassy/artillery,shoreditch-ops/artillery-core,shoreditch-ops/artillery