Fix path for systemd power-off script

Author: Lachlan Donald

packer/scripts/install-buildkite-agent.sh

@@ -55,7 +55,7 @@ echo "Adding systemd service template..."
 sudo cp /tmp/conf/buildkite-agent/systemd/buildkite-agent.service /etc/systemd/system/buildkite-agent.service
 
 echo "Adding cloud-init failure safety check..."
-sudo cp /tmp/conf/buildkite-agent/systemd/system/cloud-final.service.d/10-power-off-on-failure.conf /etc/systemd/system/cloud-final.service.d/10-power-off-on-failure.conf
+sudo cp /tmp/conf/buildkite-agent/systemd/cloud-final.service.d/10-power-off-on-failure.conf /etc/systemd/system/cloud-final.service.d/10-power-off-on-failure.conf
 
 echo "Adding termination scripts..."
 sudo cp /tmp/conf/buildkite-agent/scripts/stop-agent-gracefully /usr/local/bin/stop-agent-gracefully