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.

11 files changed, 26 insertions, 2 deletions

diff --git a/lib/gitlab/health_checks/base_abstract_check.rb b/lib/gitlab/health_checks/base_abstract_check.rb
index 8b365dab185..1d31f59999c 100644
--- a/lib/gitlab/health_checks/base_abstract_check.rb
+++ b/lib/gitlab/health_checks/base_abstract_check.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Gitlab
   module HealthChecks
     module BaseAbstractCheck
diff --git a/lib/gitlab/health_checks/db_check.rb b/lib/gitlab/health_checks/db_check.rb
index 08495c0a59e..2bcd25cd3cc 100644
--- a/lib/gitlab/health_checks/db_check.rb
+++ b/lib/gitlab/health_checks/db_check.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Gitlab
   module HealthChecks
     class DbCheck
diff --git a/lib/gitlab/health_checks/gitaly_check.rb b/lib/gitlab/health_checks/gitaly_check.rb
index 1f623e0b6ec..898733fea5d 100644
--- a/lib/gitlab/health_checks/gitaly_check.rb
+++ b/lib/gitlab/health_checks/gitaly_check.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Gitlab
   module HealthChecks
     class GitalyCheck
diff --git a/lib/gitlab/health_checks/metric.rb b/lib/gitlab/health_checks/metric.rb
index d62d9136886..62a5216d159 100644
--- a/lib/gitlab/health_checks/metric.rb
+++ b/lib/gitlab/health_checks/metric.rb
@@ -1,3 +1,6 @@
-module Gitlab::HealthChecks # rubocop:disable Naming/FileName
+# rubocop:disable Naming/FileName
+# frozen_string_literal: true
+
+module Gitlab::HealthChecks
   Metric = Struct.new(:name, :value, :labels)
 end
diff --git a/lib/gitlab/health_checks/prometheus_text_format.rb b/lib/gitlab/health_checks/prometheus_text_format.rb
index b3c759b4730..2a8f9d31cd5 100644
--- a/lib/gitlab/health_checks/prometheus_text_format.rb
+++ b/lib/gitlab/health_checks/prometheus_text_format.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Gitlab
   module HealthChecks
     class PrometheusTextFormat
diff --git a/lib/gitlab/health_checks/redis/cache_check.rb b/lib/gitlab/health_checks/redis/cache_check.rb
index 2f6c4db12bb..0c8fe83893b 100644
--- a/lib/gitlab/health_checks/redis/cache_check.rb
+++ b/lib/gitlab/health_checks/redis/cache_check.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Gitlab
   module HealthChecks
     module Redis
diff --git a/lib/gitlab/health_checks/redis/queues_check.rb b/lib/gitlab/health_checks/redis/queues_check.rb
index 63d2882c5b2..b1e33b9f459 100644
--- a/lib/gitlab/health_checks/redis/queues_check.rb
+++ b/lib/gitlab/health_checks/redis/queues_check.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Gitlab
   module HealthChecks
     module Redis
diff --git a/lib/gitlab/health_checks/redis/redis_check.rb b/lib/gitlab/health_checks/redis/redis_check.rb
index 8ceb0a0aa46..f7e46fce134 100644
--- a/lib/gitlab/health_checks/redis/redis_check.rb
+++ b/lib/gitlab/health_checks/redis/redis_check.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Gitlab
   module HealthChecks
     module Redis
diff --git a/lib/gitlab/health_checks/redis/shared_state_check.rb b/lib/gitlab/health_checks/redis/shared_state_check.rb
index f1ea1ffe1be..285ac271929 100644
--- a/lib/gitlab/health_checks/redis/shared_state_check.rb
+++ b/lib/gitlab/health_checks/redis/shared_state_check.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Gitlab
   module HealthChecks
     module Redis
diff --git a/lib/gitlab/health_checks/result.rb b/lib/gitlab/health_checks/result.rb
index e323e2c9723..d32a6980eb8 100644
--- a/lib/gitlab/health_checks/result.rb
+++ b/lib/gitlab/health_checks/result.rb
@@ -1,3 +1,6 @@
-module Gitlab::HealthChecks # rubocop:disable Naming/FileName
+# rubocop:disable Naming/FileName
+# frozen_string_literal: true
+
+module Gitlab::HealthChecks
   Result = Struct.new(:success, :message, :labels)
 end
diff --git a/lib/gitlab/health_checks/simple_abstract_check.rb b/lib/gitlab/health_checks/simple_abstract_check.rb
index 96945ce5b20..3588260d6eb 100644
--- a/lib/gitlab/health_checks/simple_abstract_check.rb
+++ b/lib/gitlab/health_checks/simple_abstract_check.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Gitlab
   module HealthChecks
     module SimpleAbstractCheck