updated the tripal collection bundle schema to remove the unique constraint on the collection id

tripal/tripal.install

@@ -364,11 +364,16 @@ function tripal_tripal_collection_schema() {
 function tripal_tripal_collection_bundle_schema() {
   return array(
     'fields' => array(
-      'collection_id' => array(
+      'collection_bundle_id' => array(
         'type' => 'serial',
         'unsigned' => TRUE,
         'not null' => TRUE
       ),
+      'collection_id' => array(
+        'type' => 'varchar',
+        'unsigned' => TRUE,
+        'not null' => TRUE
+      ),
      'bundle_name' => array(
         'type' => 'varchar',
         'length' => 1024,
@@ -390,7 +395,7 @@ function tripal_tripal_collection_bundle_schema() {
     'indexes' => array(
       'collection_id' => array('collection_id')
     ),
-    'primary key' => array('collection_id'),
+    'primary key' => array('collection_bundle_id'),
   );
 }