Merge #7128

7128: Backport to workaround from ruby core. r=deivid-rodriguez a=hsbt

### What was the end-user problem that led to this PR?

The current master branch couldn't invoke with the ruby core repository.

### What was your diagnosis of the problem?

1. We need to add explicitly declare `rspec` in spec_helper.rb
2. Some examples were failed on ruby core repository.

### What is your fix for the problem, implemented in this PR?

1. simply added.
2. update the `ruby_repo` labels for skipping to run.


Co-authored-by: SHIBATA Hiroshi <hsbt@ruby-lang.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/spec/install/gemfile/git_spec.rb b/spec/install/gemfile/git_spec.rb
index 785bf4336e..8ca22f1d87 100644
--- a/spec/install/gemfile/git_spec.rb
+++ b/spec/install/gemfile/git_spec.rb
@@ -1247,7 +1247,7 @@ In Gemfile:
       expect(out).to eq(installed_time)
     end
 
-    it "does not reinstall the extension when changing another gem" do
+    it "does not reinstall the extension when changing another gem", :ruby_repo do
       build_git "foo" do |s|
         s.add_dependency "rake"
         s.extensions << "Rakefile"
@@ -1290,7 +1290,7 @@ In Gemfile:
       expect(out).to eq(installed_time)
     end
 
-    it "does reinstall the extension when changing refs" do
+    it "does reinstall the extension when changing refs", :ruby_repo do
       build_git "foo" do |s|
         s.add_dependency "rake"
         s.extensions << "Rakefile"