MAGETWO-95035: Multi-master splitting works for the core tables (created through declarative schema) but not for tables created with setup scripts

Author: rganin

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

@@ -198,7 +198,7 @@
             <column name="attribute_id"/>
         </index>
     </table>
-    <table name="salesrule_coupon_aggregated" resource="default" engine="innodb" comment="Coupon Aggregated">
+    <table name="salesrule_coupon_aggregated" resource="sales" engine="innodb" comment="Coupon Aggregated">
         <column xsi:type="int" name="id" padding="10" unsigned="true" nullable="false" identity="true" comment="Id"/>
         <column xsi:type="date" name="period" nullable="false" comment="Period"/>
         <column xsi:type="smallint" name="store_id" padding="5" unsigned="true" nullable="true" identity="false"
@@ -239,7 +239,7 @@
             <column name="rule_name"/>
         </index>
     </table>
-    <table name="salesrule_coupon_aggregated_updated" resource="default" engine="innodb"
+    <table name="salesrule_coupon_aggregated_updated" resource="sales" engine="innodb"
            comment="Salesrule Coupon Aggregated Updated">
         <column xsi:type="int" name="id" padding="10" unsigned="true" nullable="false" identity="true" comment="Id"/>
         <column xsi:type="date" name="period" nullable="false" comment="Period"/>

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

@@ -139,7 +139,7 @@
             <column name="store_id"/>
         </index>
     </table>
-    <table name="tax_order_aggregated_created" resource="default" engine="innodb" comment="Tax Order Aggregation">
+    <table name="tax_order_aggregated_created" resource="sales" engine="innodb" comment="Tax Order Aggregation">
         <column xsi:type="int" name="id" padding="10" unsigned="true" nullable="false" identity="true" comment="Id"/>
         <column xsi:type="date" name="period" comment="Period"/>
         <column xsi:type="smallint" name="store_id" padding="5" unsigned="true" nullable="true" identity="false"
@@ -168,7 +168,7 @@
             <column name="store_id"/>
         </index>
     </table>
-    <table name="tax_order_aggregated_updated" resource="default" engine="innodb"
+    <table name="tax_order_aggregated_updated" resource="sales" engine="innodb"
            comment="Tax Order Aggregated Updated">
         <column xsi:type="int" name="id" padding="10" unsigned="true" nullable="false" identity="true" comment="Id"/>
         <column xsi:type="date" name="period" comment="Period"/>