add migration. remove alerta url

tower/migrations/026_remove_alerta_url.py

+from peewee import CharField
+
+
+def migrate(migrator):
+    migrator.drop_column(
+        "environment",
+        "alerta_url"
+    ),
+    migrator.drop_column(
+        "environment",
+        "alerta_token"
+    )

tower/models/migration.py

@@ -90,8 +90,8 @@ class Migrator(object):
         operation = self.migrator.add_column(table, name, field)
         return operation.run()
 
-    def drop_column(self, table, name, field, cascade=True):
-        operation = self.migrator.drop_column(table, name, field, cascade=cascade)
+    def drop_column(self, table, field, cascade=True):
+        operation = self.migrator.drop_column(table, field, cascade=cascade)
         return operation.run()
 
     def rename_column(self, table, old_name, new_name):

tower/ui/environment_logic.js

@@ -49,7 +49,9 @@ var environment_logic = {
             mongo_password: "noc",
             influxdb_db: "noc",
             influxdb_user: "noc",
-            influxdb_password: "noc"
+            influxdb_password: "noc",
+            config_order: "legacy:///,yaml:///opt/noc/etc/settings.yml,env:///NOC",
+            name: "NOC"
         });
     },
 

tower/ui/environment_ui.js

@@ -186,11 +186,11 @@ var environment_form = {
                                 value: "eval"
                             },
                             {
+                                placeholder: "legacy:///,yaml:///opt/noc/etc/settings.yml,env:///NOC",
                                 view: "text",
                                 name: "config_order",
                                 label: "Config load preference",
-                                required: true,
-                                value: "legacy:///,yaml:///opt/noc/etc/settings.yml,env:///NOC"
+                                required: true
                             }
 
                         ]