Enable even more frozen string in lib/gitlab

Enables frozen string for the following:

* lib/gitlab/fogbugz_import/**/*.rb
* lib/gitlab/gfm/**/*.rb
* lib/gitlab/git/**/*.rb
* lib/gitlab/gitaly_client/**/*.rb
* lib/gitlab/gitlab_import/**/*.rb
* lib/gitlab/google_code_import/**/*.rb
* lib/gitlab/gpg/**/*.rb
* lib/gitlab/grape_logging/**/*.rb
* lib/gitlab/graphql/**/*.rb
* lib/gitlab/graphs/**/*.rb
* lib/gitlab/hashed_storage/**/*.rb
* lib/gitlab/health_checks/**/*.rb

Partially address gitlab-org/gitlab-ce#47424.

10 files changed, 20 insertions, 0 deletions

diff --git a/lib/gitlab/graphql/authorize.rb b/lib/gitlab/graphql/authorize.rb
index 93a903915b0..5e48bf9043d 100644
--- a/lib/gitlab/graphql/authorize.rb
+++ b/lib/gitlab/graphql/authorize.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Gitlab
   module Graphql
     # Allow fields to declare permissions their objects must have. The field
diff --git a/lib/gitlab/graphql/authorize/authorize_resource.rb b/lib/gitlab/graphql/authorize/authorize_resource.rb
index 40895686a8a..a56c4f6368d 100644
--- a/lib/gitlab/graphql/authorize/authorize_resource.rb
+++ b/lib/gitlab/graphql/authorize/authorize_resource.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Gitlab
   module Graphql
     module Authorize
diff --git a/lib/gitlab/graphql/authorize/instrumentation.rb b/lib/gitlab/graphql/authorize/instrumentation.rb
index 6cb8e617f62..d638d2b43ee 100644
--- a/lib/gitlab/graphql/authorize/instrumentation.rb
+++ b/lib/gitlab/graphql/authorize/instrumentation.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Gitlab
   module Graphql
     module Authorize
diff --git a/lib/gitlab/graphql/connections.rb b/lib/gitlab/graphql/connections.rb
index 2582ffeb2a8..fbccdfa7b08 100644
--- a/lib/gitlab/graphql/connections.rb
+++ b/lib/gitlab/graphql/connections.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Gitlab
   module Graphql
     module Connections
diff --git a/lib/gitlab/graphql/connections/keyset_connection.rb b/lib/gitlab/graphql/connections/keyset_connection.rb
index 3c0d7e9784a..851054c0393 100644
--- a/lib/gitlab/graphql/connections/keyset_connection.rb
+++ b/lib/gitlab/graphql/connections/keyset_connection.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Gitlab
   module Graphql
     module Connections
diff --git a/lib/gitlab/graphql/errors.rb b/lib/gitlab/graphql/errors.rb
index f8c7ec24be1..fe74549e322 100644
--- a/lib/gitlab/graphql/errors.rb
+++ b/lib/gitlab/graphql/errors.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Gitlab
   module Graphql
     module Errors
diff --git a/lib/gitlab/graphql/expose_permissions.rb b/lib/gitlab/graphql/expose_permissions.rb
index e3779995406..365b7cca24f 100644
--- a/lib/gitlab/graphql/expose_permissions.rb
+++ b/lib/gitlab/graphql/expose_permissions.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Gitlab
   module Graphql
     module ExposePermissions
diff --git a/lib/gitlab/graphql/present.rb b/lib/gitlab/graphql/present.rb
index 2c7b64f1be9..7f69bf601d6 100644
--- a/lib/gitlab/graphql/present.rb
+++ b/lib/gitlab/graphql/present.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Gitlab
   module Graphql
     module Present
diff --git a/lib/gitlab/graphql/present/instrumentation.rb b/lib/gitlab/graphql/present/instrumentation.rb
index f87fd147b15..ab03c40c22d 100644
--- a/lib/gitlab/graphql/present/instrumentation.rb
+++ b/lib/gitlab/graphql/present/instrumentation.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Gitlab
   module Graphql
     module Present
diff --git a/lib/gitlab/graphql/variables.rb b/lib/gitlab/graphql/variables.rb
index ffbaf65b512..b13ea37c21f 100644
--- a/lib/gitlab/graphql/variables.rb
+++ b/lib/gitlab/graphql/variables.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Gitlab
   module Graphql
     class Variables