v0.11.157

Changes

add plaintext=bool parameter to lightstep tracer (#1538)
this can be used to talk to lightstep satellites without TLS (e.g. an in-cluster
service).

Docker image

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

docker run -it registry.opensource.zalan.do/pathfinder/skipper:v0.11.157 skipper --help
# arm64
docker run -it registry.opensource.zalan.do/pathfinder/skipper-arm64:v0.11.157 skipper --help
# arm v7 32bit
docker run -it registry.opensource.zalan.do/pathfinder/skipper-armv7:v0.11.157 skipper --help