Tests

Fix data races #67

Job	Run time
e2e-nat	5m 38s
e2e-basic	4m 27s
unit-tests	3m 53s
verify-build / setup-env	10s
verify-build / build-packages (PackageLinuxRaspberryImage)	33s
verify-build / build-packages (PackageLinuxAmd64)	1m 35s
verify-build / build-packages (PackageLinuxArm)	1m 30s
verify-build / build-packages (PackageLinuxDebianAmd64)	50s
verify-build / build-packages (PackageLinuxDebianArm64)	1m 22s
verify-build / build-packages (PackageLinuxDebianArm)	1m 34s
verify-build / build-packages (PackageMacOSAmd64)	3m 15s
verify-build / build-packages (PackageMacOSArm64)	3m 12s
verify-build / build-packages (PackageWindowsAmd64)	3m 8s
verify-build / build-packages (PackageAndroid)	26s
verify-build / build-packages (PackageAndroidProvider)	25s
verify-build / build-swagger	24s
verify-build / release	0s
verify-build / cleanup-env	0s
	32m 22s

Provide feedback