[ReleasePR app] Fix format of cert password for env custom domain (#2653)

Create to sync Azure/azure-rest-api-specs#21461
[ReCreate this PR](https://github.com/azure-resource-manager-schemas/compare/main...azure-sdk:sdkAuto/app?expand=1)

Author: msftbot[bot]

schemas/2022-01-01-preview/Microsoft.App.json

@@ -2812,7 +2812,8 @@
         "maxReplicas": {
           "oneOf": [
             {
-              "type": "integer"
+              "type": "integer",
+              "default": "10"
             },
             {
               "$ref": "https://schema.management.azure.com/schemas/common/definitions.json#/definitions/expression"

schemas/2022-03-01/Microsoft.App.json

@@ -2838,7 +2838,8 @@
         "maxReplicas": {
           "oneOf": [
             {
-              "type": "integer"
+              "type": "integer",
+              "default": "10"
             },
             {
               "$ref": "https://schema.management.azure.com/schemas/common/definitions.json#/definitions/expression"

schemas/2022-06-01-preview/Microsoft.App.json

@@ -1907,15 +1907,7 @@
       "type": "object",
       "properties": {
         "certificatePassword": {
-          "oneOf": [
-            {
-              "type": "string",
-              "pattern": "^(?:[A-Za-z0-9+\\/]{4})*(?:[A-Za-z0-9+\\/]{2}==|[A-Za-z0-9+\\/]{3}=)?$"
-            },
-            {
-              "$ref": "https://schema.management.azure.com/schemas/common/definitions.json#/definitions/expression"
-            }
-          ],
+          "type": "string",
           "description": "Certificate password"
         },
         "certificateValue": {
@@ -3611,7 +3603,8 @@
         "maxReplicas": {
           "oneOf": [
             {
-              "type": "integer"
+              "type": "integer",
+              "default": "10"
             },
             {
               "$ref": "https://schema.management.azure.com/schemas/common/definitions.json#/definitions/expression"