style(rubocop): fix all safe auto correctable offenses

app/controllers/ip_pools_controller.rb

@@ -14,25 +14,25 @@ class IPPoolsController < ApplicationController
   def create
     @ip_pool = IPPool.new(safe_params)
     if @ip_pool.save
-      redirect_to_with_json [:edit, @ip_pool], :notice => "IP Pool has been added successfully. You can now add IP addresses to it."
+      redirect_to_with_json [:edit, @ip_pool], notice: "IP Pool has been added successfully. You can now add IP addresses to it."
     else
-      render_form_errors 'new', @ip_pool
+      render_form_errors "new", @ip_pool
     end
   end
 
   def update
     if @ip_pool.update(safe_params)
-      redirect_to_with_json [:edit, @ip_pool], :notice => "IP Pool has been updated."
+      redirect_to_with_json [:edit, @ip_pool], notice: "IP Pool has been updated."
     else
-      render_form_errors 'edit', @ip_pool
+      render_form_errors "edit", @ip_pool
     end
   end
 
   def destroy
     @ip_pool.destroy
-    redirect_to_with_json :ip_pools, :notice => "IP pool has been removed successfully."
+    redirect_to_with_json :ip_pools, notice: "IP pool has been removed successfully."
   rescue ActiveRecord::DeleteRestrictionError => e
-    redirect_to_with_json [:edit, @ip_pool], :alert => "IP pool cannot be removed because it still has associated addresses or servers."
+    redirect_to_with_json [:edit, @ip_pool], alert: "IP pool cannot be removed because it still has associated addresses or servers."
   end
 
   private