metropolis/test/util: move in NewEphemeralClusterCredentials from rpc

Change-Id: I41603b19a76ea91c2191b0118183957973fc9ccd
Reviewed-on: https://review.monogon.dev/c/monogon/+/1960
Reviewed-by: Tim Windelschmidt <tim@monogon.tech>
Tested-by: Jenkins CI
diff --git a/metropolis/node/core/roleserve/BUILD.bazel b/metropolis/node/core/roleserve/BUILD.bazel
index f6d8b86..abdf8b3 100644
--- a/metropolis/node/core/roleserve/BUILD.bazel
+++ b/metropolis/node/core/roleserve/BUILD.bazel
@@ -57,9 +57,9 @@
         "//metropolis/node/core/consensus",
         "//metropolis/node/core/curator",
         "//metropolis/node/core/curator/proto/api",
-        "//metropolis/node/core/rpc",
         "//metropolis/pkg/supervisor",
         "//metropolis/proto/common",
+        "//metropolis/test/util",
         "@com_github_cenkalti_backoff_v4//:backoff",
         "@com_github_google_go_cmp//cmp",
         "@org_golang_google_grpc//:go_default_library",
diff --git a/metropolis/node/core/roleserve/worker_statuspush_test.go b/metropolis/node/core/roleserve/worker_statuspush_test.go
index d8a0a8c..a237360 100644
--- a/metropolis/node/core/roleserve/worker_statuspush_test.go
+++ b/metropolis/node/core/roleserve/worker_statuspush_test.go
@@ -18,8 +18,8 @@
 	common "source.monogon.dev/metropolis/node"
 	"source.monogon.dev/metropolis/node/core/consensus"
 	"source.monogon.dev/metropolis/node/core/curator"
-	"source.monogon.dev/metropolis/node/core/rpc"
 	"source.monogon.dev/metropolis/pkg/supervisor"
+	"source.monogon.dev/metropolis/test/util"
 
 	ipb "source.monogon.dev/metropolis/node/core/curator/proto/api"
 	cpb "source.monogon.dev/metropolis/proto/common"
@@ -98,7 +98,7 @@
 	}
 	defer cl.Close()
 
-	eph := rpc.NewEphemeralClusterCredentials(t, 1)
+	eph := util.NewEphemeralClusterCredentials(t, 1)
 	nodeID := eph.Nodes[0].ID()
 
 	// Actual test code starts here.