Backport GitLab domain helper methods

config/initializers/deprecations.rb

 deprecator = ActiveSupport::Deprecation.new('11.0', 'GitLab')
-if Gitlab.inc_controlled? || Rails.env.development?
+if Gitlab.com? || Rails.env.development?
   ActiveSupport::Deprecation.deprecate_methods(Gitlab::GitalyClient::StorageSettings, :legacy_disk_path, deprecator: deprecator)
 end

lib/gitlab.rb

@@ -3,21 +3,18 @@ require_dependency 'gitlab/git'
 module Gitlab
   COM_URL = 'https://gitlab.com'.freeze
   APP_DIRS_PATTERN = %r{^/?(app|config|ee|lib|spec|\(\w*\))}
+  SUBDOMAIN_REGEX = %r{\Ahttps://[a-z0-9]+\.gitlab\.com\z}
   def self.com?
-    # Check `staging?` as well to keep parity with gitlab.com
-    Gitlab.config.gitlab.url == COM_URL || staging?
+    # Check `gl_subdomain?` as well to keep parity with gitlab.com
+    Gitlab.config.gitlab.url == COM_URL || gl_subdomain?
   end
-  def self.staging?
-    Gitlab.config.gitlab.url == 'https://staging.gitlab.com'
+  def self.gl_subdomain?
+    SUBDOMAIN_REGEX === Gitlab.config.gitlab.url
   end
-  def self.dev?
-    Gitlab.config.gitlab.url == 'https://dev.gitlab.org'
-  end
-
-  def self.inc_controlled?
-    dev? || staging? || com?
+  def self.dev_env_or_com?
+    Rails.env.test? || Rails.env.development? || com?
   end
 end

spec/lib/gitlab_spec.rb

@@ -14,6 +14,12 @@ describe Gitlab do
       expect(described_class.com?).to eq true
     end
+    it 'is true when on other gitlab subdomain' do
+      stub_config_setting(url: 'https://example.gitlab.com')
+
+      expect(described_class.com?).to eq true
+    end
+
     it 'is false when not on GitLab.com' do
       stub_config_setting(url: 'http://example.com')