Clean up "Cloning into 'submodule-1.0'..." output messages from test suite

- Removes the following output messages from the test suite:
```
Cloning into 'submodule-1.0'...
done.
```

3 files changed, 9 insertions, 9 deletions

diff --git a/spec/cache/git_spec.rb b/spec/cache/git_spec.rb
index 8600455c6a..001cbb4564 100644
--- a/spec/cache/git_spec.rb
+++ b/spec/cache/git_spec.rb
@@ -123,18 +123,18 @@ end
       end
 
       Dir.chdir(lib_path("has_submodule-1.0")) do
-        `git submodule add #{lib_path("submodule-1.0")} submodule-1.0`
+        sys_exec "git submodule add #{lib_path("submodule-1.0")} submodule-1.0", :expect_err => true
         `git commit -m "submodulator"`
       end
 
-      install_gemfile <<-G
+      install_gemfile <<-G, :expect_err => true
         git "#{lib_path("has_submodule-1.0")}", :submodules => true do
           gem "has_submodule"
         end
       G
 
       ref = git.ref_for("master", 11)
-      bundle "#{cmd} --all"
+      bundle "#{cmd} --all", :expect_err => true
 
       expect(bundled_app("vendor/cache/has_submodule-1.0-#{ref}")).to exist
       expect(bundled_app("vendor/cache/has_submodule-1.0-#{ref}/submodule-1.0")).to exist
diff --git a/spec/install/gemfile/git_spec.rb b/spec/install/gemfile/git_spec.rb
index ec4bd59e68..ec148f99ff 100644
--- a/spec/install/gemfile/git_spec.rb
+++ b/spec/install/gemfile/git_spec.rb
@@ -575,7 +575,7 @@ describe "bundle install with git sources" do
       s.add_dependency "submodule"
     end
     Dir.chdir(lib_path("has_submodule-1.0")) do
-      `git submodule add #{lib_path("submodule-1.0")} submodule-1.0`
+      sys_exec "git submodule add #{lib_path("submodule-1.0")} submodule-1.0", :expect_err => true
       `git commit -m "submodulator"`
     end
 
@@ -595,11 +595,11 @@ describe "bundle install with git sources" do
       s.add_dependency "submodule"
     end
     Dir.chdir(lib_path("has_submodule-1.0")) do
-      `git submodule add #{lib_path("submodule-1.0")} submodule-1.0`
+      sys_exec "git submodule add #{lib_path("submodule-1.0")} submodule-1.0", :expect_err => true
       `git commit -m "submodulator"`
     end
 
-    install_gemfile <<-G
+    install_gemfile <<-G, :expect_err => true
       git "#{lib_path("has_submodule-1.0")}", :submodules => true do
         gem "has_submodule"
       end
diff --git a/spec/update/git_spec.rb b/spec/update/git_spec.rb
index 9133f9473c..1c69918f25 100644
--- a/spec/update/git_spec.rb
+++ b/spec/update/git_spec.rb
@@ -131,7 +131,7 @@ describe "bundle update" do
         end
 
         Dir.chdir(lib_path("has_submodule-1.0")) do
-          `git submodule add #{lib_path("submodule-1.0")} submodule-1.0`
+          sys_exec "git submodule add #{lib_path("submodule-1.0")} submodule-1.0", :expect_err => true
           `git commit -m "submodulator"`
         end
       end
@@ -146,7 +146,7 @@ describe "bundle update" do
         run "require 'submodule'"
         expect(out).to eq("GEM")
 
-        install_gemfile <<-G
+        install_gemfile <<-G, :expect_err => true
           git "#{lib_path("has_submodule-1.0")}", :submodules => true do
             gem "has_submodule"
           end
@@ -158,7 +158,7 @@ describe "bundle update" do
 
       it "it unlocks the source when submodules are removed from git source" do
         pending "This would require actually removing the submodule from the clone"
-        install_gemfile <<-G
+        install_gemfile <<-G, :expect_err => true
           git "#{lib_path("has_submodule-1.0")}", :submodules => true do
             gem "has_submodule"
           end