v0.13.181

Changes

filters/scheduler: wait for spans finishing in lifo errors test (#1964)
The tests was introduced by #1944
It may happen that not all spans are finished by the time test verifies
response results (because spans are closed after response has been
served).
This change waits for all mock spans to finish and forces scheduler
metrics update.

Docker image

Docker image is available in Zalando's Open Source registry:

docker run -it registry.opensource.zalan.do/teapot/skipper:v0.13.181 skipper --help
# arm64
docker run -it registry.opensource.zalan.do/teapot/skipper-arm64:v0.13.181 skipper --help
# arm v7 32bit
docker run -it registry.opensource.zalan.do/teapot/skipper-armv7:v0.13.181 skipper --help