CC-4612: Create index for cc_schedule during upgrade to improve the performance when cc_schedule's getting bigger

- also create one during fresh install

airtime_mvc/build/schema.xml

@@ -91,6 +91,8 @@
     <index name="cc_files_name_idx">
       <index-column name="name"/>
     </index>
+    <!-- Doesn't make sense to have an index on a set with Cardinality of 2 {true, false}. Should
+         remove this for 2.3 -MK -->
     <index name="cc_files_file_exists_idx">
       <index-column name="file_exists"/>
     </index>
@@ -332,6 +334,9 @@
     <foreign-key foreignTable="cc_webstream" name="cc_show_stream_fkey" onDelete="CASCADE">
       <reference local="stream_id" foreign="id"/>
     </foreign-key>
+    <index name="cc_schedule_instance_id_idx">
+      <index-column name="instance_id"/>
+    </index>
  </table>
   <table name="cc_sess" phpName="CcSess">
     <column name="sessid" phpName="Sessid" type="CHAR" size="32" primaryKey="true" required="true"/>

airtime_mvc/build/sql/schema.sql

@@ -429,6 +429,8 @@ COMMENT ON TABLE "cc_schedule" IS '';
 
 
 SET search_path TO public;
+CREATE INDEX "cc_schedule_instance_id_idx" ON "cc_schedule" ("instance_id");
+
 -----------------------------------------------------------------------------
 -- cc_sess
 -----------------------------------------------------------------------------