Tests

Fix data races #68

Job	Run time
e2e-nat	5m 59s
e2e-basic	4m 20s
unit-tests	3m 46s
verify-build / setup-env	19s
verify-build / build-packages (PackageLinuxRaspberryImage)	32s
verify-build / build-packages (PackageLinuxAmd64)	1m 44s
verify-build / build-packages (PackageLinuxArm)	1m 27s
verify-build / build-packages (PackageLinuxDebianAmd64)	48s
verify-build / build-packages (PackageLinuxDebianArm64)	1m 24s
verify-build / build-packages (PackageLinuxDebianArm)	1m 41s
verify-build / build-packages (PackageMacOSAmd64)	3m 13s
verify-build / build-packages (PackageMacOSArm64)	3m 12s
verify-build / build-packages (PackageWindowsAmd64)	3m 12s
verify-build / build-packages (PackageAndroid)	28s
verify-build / build-packages (PackageAndroidProvider)	38s
verify-build / build-swagger	36s
verify-build / release	0s
verify-build / cleanup-env	0s
	33m 19s

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