fix(userworkers): reconciliate env names #107

Job	Run time
Run Go Tests	1m 37s
Build images (httpimporter, sensorbucket/httpimporter, tools/Dockerfile.shared)	1m 17s
Build images (mqtt-ingress, sensorbucket/mqttingress, tools/Dockerfile.shared)	1m 21s
Build images (core, sensorbucket/core, tools/Dockerfile.shared)	1m 35s
Build images (tracing, sensorbucket/tracing, tools/Dockerfile.shared)	1m 35s
Build images (fission-user-workers, sensorbucket/fission-user-workers, tools/Dockerfile.shared)	4m 47s
Build images (fission-rmq-connector, sensorbucket/fission-rmq-connector, tools/Dockerfile.shared)	1m 26s
Build images (dashboard, sensorbucket/dashboard, services/dashboard/Dockerfile)	1m 25s
Build images (tenants, sensorbucket/tenants, services/tenants/Dockerfile)	1m 29s
	16m 32s

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