Revert "Adjust expected exit code in ShutdownTests.cs"

This reverts commit 3c695d2.

Author: jkotas

src/Hosting/test/FunctionalTests/ShutdownTests.cs

@@ -99,7 +99,7 @@ private async Task ExecuteShutdownTest(string testName, string shutdownMechanic)
 
                 SendSIGTERM(deployer.HostProcess.Id);
 
-                WaitForExitOrKill(deployer.HostProcess, 143); // Expected exit code of a process terminated by `kill -s TERM`
+                WaitForExitOrKill(deployer.HostProcess);
 
                 try
                 {
@@ -131,14 +131,14 @@ private static void SendSIGTERM(int processId)
         WaitForExitOrKill(process);
     }
 
-    private static void WaitForExitOrKill(Process process, int expectedExitCode = 0)
+    private static void WaitForExitOrKill(Process process)
     {
         process.WaitForExit(5 * 1000);
         if (!process.HasExited)
         {
             process.Kill();
         }
 
-        Assert.Equal(expectedExitCode, process.ExitCode);
+        Assert.Equal(0, process.ExitCode);
     }
 }