Fixes #37061 - In DEV env generate admin with 'changeme' password

By default the admin password is a random string,
which makes sense from a security point of view,
but in the DEV environment, the password can be something
easy to remember, like `changeme`.

This reduces the necessity of resetting the password in UI or
with the `rails permissions:reset` task, which is good
especially for newcomers who are trying Foreman for the first time.

db/seeds.d/035-admin.rb

@@ -59,9 +59,9 @@
       if ENV['SEED_ADMIN_PASSWORD'].present?
         user.password = ENV['SEED_ADMIN_PASSWORD']
       else
-        random = User.random_password
-        user.password = random
-        puts "Login credentials: #{user.login} / #{random}" unless Rails.env.test?
+        password = Rails.env.development? ? 'changeme' : User.random_password
+        user.password = password
+        puts "Login credentials: #{user.login} / #{password}" unless Rails.env.test?
       end
       raise "Unable to create admin user: #{SeedHelper.format_errors user}" unless user.save
     end