Merge branch '349549-inconsistent-schema-index-4' into 'master'

Resolve "Inconsistent schema - tmp_index_ci_pipelines_lock_version index"

See merge request gitlab-org/gitlab!77832

db/migrate/20220109133006_remove_ci_pipelines_lock_version_index.rb

+# frozen_string_literal: true
+
+class RemoveCiPipelinesLockVersionIndex < Gitlab::Database::Migration[1.0]
+  TABLE = :ci_pipelines
+  INDEX_NAME = 'tmp_index_ci_pipelines_lock_version'
+  COLUMN = :id
+
+  disable_ddl_transaction!
+
+  def up
+    remove_concurrent_index TABLE, COLUMN, where: "lock_version IS NULL", name: INDEX_NAME
+  end
+
+  def down
+    add_concurrent_index TABLE, COLUMN, where: "lock_version IS NULL", name: INDEX_NAME
+  end
+end

db/schema_migrations/20220109133006

+192fc0b934c7d52e431a0ce7524a51beb24fa004a940e6b0675e36b0da143891
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