Migrate IoT to test proxy (Azure#25848)

Author: JoshLove-msft

sdk/core/Azure.Core.TestFramework/src/RecordedTestSanitizer.cs

@@ -53,6 +53,15 @@ public void AddJsonPathSanitizer(string jsonPath, Func<JToken, JToken> sanitizer
             JsonPathSanitizers.Add((jsonPath, sanitizer ?? (_ => JToken.FromObject(SanitizeValue))));
         }
 
+        public void ReplaceHostInUri(string replacementHostName)
+        {
+            UriRegexSanitizers.Add(
+                new UriRegexSanitizer(@"https://(?<host>[^/]+)/", replacementHostName)
+                {
+                    GroupForReplace = "host"
+                });
+        }
+
         public virtual string SanitizeUri(string uri)
         {
             return uri;

sdk/digitaltwins/Azure.DigitalTwins.Core/tests/TestUrlSanitizer.cs

@@ -14,11 +14,7 @@ internal class TestUrlSanitizer : RecordedTestSanitizer
 
         public TestUrlSanitizer()
         {
-            UriRegexSanitizers.Add(
-                new UriRegexSanitizer(@"https://(?<host>[^/]+)/", FAKE_HOST)
-                {
-                    GroupForReplace = "host"
-                });
+            ReplaceHostInUri(FAKE_HOST);
         }
 
         public override string SanitizeUri(string uri)

sdk/iot/Azure.IoT.Hub.Service/tests/CustomRequestSanitizer.cs

@@ -20,13 +20,7 @@ public CustomRequestSanitizer()
             // Sanitize SAS tokens in request body
             AddJsonPathSanitizer("outputBlobContainerUri");
             AddJsonPathSanitizer("inputBlobContainerUri");
-            // TODO: Remove when re-recording
-            LegacyConvertJsonDateTokens = true;
-        }
-
-        public override string SanitizeUri(string uri)
-        {
-            return uri.Replace(new Uri(uri).Host, FakeHost);
+            ReplaceHostInUri(FakeHost);
         }
     }
 }