create update function to add new column analysis_id to instance table, so no re-install required

tripal_jbrowse_mgmt/tripal_jbrowse_mgmt.install

@@ -132,3 +132,15 @@ function tripal_jbrowse_mgmt_update_7001(&$sandbox) {
   $table = $schema[$name];
   db_create_table($name, $table);
 }
+
+/**
+ * adding a new column analysis_id to table tripal_jbrowse_mgmt_instances
+ */
+function tripal_jbrowse_mgmt_update_7002(&$sandbox){
+  $new_col_spec = [
+    'type' => 'int',
+    'not null' => FALSE,
+  ];
+  $schema = Database::getConnection()->schema();
+  $schema->addField('tripal_jbrowse_mgmt_instances', 'analysis_id', $new_col_spec);
+}