Revert "[aws-ec2] don't set default tempfile name by plugin"
Revert "[aws-ec2] don't set default tempfile name by plugin"

This reverts commit 6508d6719797c726d04e57ba8b91ed9713ff27b5.

xorphitus/mackerel-agent-plugins,ki38sato/mackerel-agent-plugins,mackerelio/mackerel-agent-plugins,mackerelio/mackerel-agent-plugins,ki38sato/mackerel-agent-plugins,ki38sato/mackerel-agent-plugins,hiroakis/mackerel-agent-plugins,ariarijp/mackerel-agent-plugins,mackerelio/mackerel-agent-plugins,mackerelio/mackerel-agent-plugins,hiroakis/mackerel-agent-plugins,hiroakis/mackerel-agent-plugins,y-kuno/mackerel-agent-plugins,y-kuno/mackerel-agent-plugins,ariarijp/mackerel-agent-plugins,xorphitus/mackerel-agent-plugins,ariarijp/mackerel-agent-plugins,hiroakis/mackerel-agent-plugins,xorphitus/mackerel-agent-plugins,ariarijp/mackerel-agent-plugins,xorphitus/mackerel-agent-plugins,ki38sato/mackerel-agent-plugins,y-kuno/mackerel-agent-plugins,y-kuno/mackerel-agent-plugins