Add ability suppress the global "You won't be able [use] SSH" message

This fixes gitlab-org/gitlab-ce#49953, as noted in the documentation
this feature is intended to be used when SSH certificates are
enabled. Then this warning becomes not only pointless, but also
misleading.

This builds on top of gitlab-org/gitlab-ce!21009 since both need to
modify the same documentation, which avoids a merge conflict.

See also the gitlab-org/gitlab-ce#49218 issue and associated merge
request.

1 files changed, 19 insertions, 0 deletions

diff --git a/db/migrate/20180808162000_add_user_show_add_ssh_key_message_to_application_settings.rb b/db/migrate/20180808162000_add_user_show_add_ssh_key_message_to_application_settings.rb
new file mode 100644
index 00000000000..e3019af2cc9
--- /dev/null
+++ b/db/migrate/20180808162000_add_user_show_add_ssh_key_message_to_application_settings.rb
@@ -0,0 +1,19 @@
+# See http://doc.gitlab.com/ce/development/migration_style_guide.html
+# for more information on how to write migrations for GitLab.
+
+class AddUserShowAddSshKeyMessageToApplicationSettings < ActiveRecord::Migration
+  include Gitlab::Database::MigrationHelpers
+
+  # Set this constant to true if this migration requires downtime.
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    add_column_with_default :application_settings, :user_show_add_ssh_key_message, :boolean, default: true, allow_null: false
+  end
+
+  def down
+    remove_column :application_settings, :user_show_add_ssh_key_message
+  end
+end