added A8_ to env var names for sidecar to separate from any similarly named user apps
added A8_ to env var names for sidecar to separate from any similarly named user apps

JacobFrericks/amalgam8,amalgam8/amalgam8,kimikowang/istio_vms,amalgam8/amalgam8,kimikowang/istio_vms,amalgam8/amalgam8,kimikowang/istio_vms,ericvn/amalgam8,tomerGolany/amalgam8,JacobFrericks/amalgam8,amalgam8/amalgam8,amalgam8/amalgam8,ericvn/amalgam8,craigyam/amalgam8,kimikowang/istio_vms,craigyam/amalgam8,JacobFrericks/amalgam8,craigyam/amalgam8,tomerGolany/amalgam8,ericvn/amalgam8,craigyam/amalgam8,craigyam/amalgam8,tomerGolany/amalgam8,kimikowang/istio_vms