[ReleasePR iothub] Removing readonly for isVerified property as it is no more readonly property (#1860)

Create to sync Azure/azure-rest-api-specs#15722
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Author: msftbot[bot]

schemas/2021-07-01-preview/Microsoft.Devices.json

@@ -275,6 +275,17 @@
         "certificate": {
           "type": "string",
           "description": "The certificate content"
+        },
+        "isVerified": {
+          "oneOf": [
+            {
+              "type": "boolean"
+            },
+            {
+              "$ref": "https://schema.management.azure.com/schemas/common/definitions.json#/definitions/expression"
+            }
+          ],
+          "description": "Determines whether certificate has been verified."
         }
       },
       "description": "The description of an X509 CA Certificate."

schemas/2021-07-01/Microsoft.Devices.json

@@ -275,6 +275,17 @@
         "certificate": {
           "type": "string",
           "description": "The certificate content"
+        },
+        "isVerified": {
+          "oneOf": [
+            {
+              "type": "boolean"
+            },
+            {
+              "$ref": "https://schema.management.azure.com/schemas/common/definitions.json#/definitions/expression"
+            }
+          ],
+          "description": "Determines whether certificate has been verified."
         }
       },
       "description": "The description of an X509 CA Certificate."