Retry failed Admin commands

Admin commands can fail if the node hasn't updated its metadata.
E.g. it does not know yet about the latest logs configuration which
it needs for appending the terminate command.

src/main/kotlin/dev/restate/sdktesting/tests/CancelInvocation.kt

@@ -65,7 +65,7 @@ class CancelInvocation {
 
     // The termination signal might arrive before the blocking call to the cancel singleton was
     // made, so we need to retry.
-    await.ignoreException(TimeoutCancellationException::class.java) withAlias
+    await withAlias
         "verify test" untilAsserted
         {
           client.terminateInvocation(id, TerminationMode.CANCEL)

src/main/kotlin/dev/restate/sdktesting/tests/KillInvocation.kt

@@ -54,7 +54,14 @@ class KillInvocation {
 
     // Kill the invocation
     val client = InvocationApi(ApiClient().setHost(metaURL.host).setPort(metaURL.port))
-    client.terminateInvocation(id, TerminationMode.KILL)
+
+    // The termination signal might arrive before the blocking call to the cancel singleton was
+    // made, so we need to retry.
+    await withAlias
+        "verify test" untilAsserted
+        {
+          client.terminateInvocation(id, TerminationMode.KILL)
+        }
 
     await withAlias
         "singleton service is unlocked after killing the call tree" untilAsserted