AC-2901:Vault/Stored Payment Methods are not saved per store

Author: faizan-shk

app/code/Magento/Vault/etc/db_schema.xml

@@ -12,6 +12,7 @@
                 comment="Entity ID"/>
         <column xsi:type="int" name="customer_id" unsigned="true" nullable="true" identity="false"
                 comment="Customer ID"/>
+        <column xsi:type="int" name="website_id" unsigned="true" nullable="true" identity="false" comment="Website ID"/>
         <column xsi:type="varchar" name="public_hash" nullable="false" length="128"
                 comment="Hash code for using on frontend"/>
         <column xsi:type="varchar" name="payment_method_code" nullable="false" length="128"

app/code/Magento/Vault/etc/db_schema_whitelist.json

@@ -11,7 +11,8 @@
             "gateway_token": true,
             "details": true,
             "is_active": true,
-            "is_visible": true
+            "is_visible": true,
+            "website_id": true
         },
         "constraint": {
             "PRIMARY": true,