Test: add irmaclient integration test #528

Job	Run time
lint	1m 26s
build (linux, amd64)	55s
build (linux, 386)	57s
build (linux, arm)	1m 6s
build (linux, arm64)	48s
build (darwin, amd64)	54s
build (darwin, arm64)	55s
build (windows, amd64)	49s
build (windows, 386)	53s
build (windows, arm)	58s
build (windows, arm64)	1m 0s
test	8m 29s
docker-build	1m 13s
analyze	3m 3s
integration-test-clientside (v0.13.2)	4s
integration-test-serverside (245a4ec92d36b41216a3f88d6e9a8c56967a4af0)	2s
	23m 32s

Provide feedback