Fix rubocop offenses

spec/lib/ci/gitlab_ci_yaml_processor_spec.rb

@@ -651,7 +651,7 @@ module Ci
             options: {
                 image: { name: "ruby:2.5", entrypoint: ["/usr/local/bin/init", "run"] },
                 services: [{ name: "postgresql", alias: "db-pg", entrypoint: ["/usr/local/bin/init", "run"],
-                             command: ["/usr/local/bin/init", "run"]},
+                             command: ["/usr/local/bin/init", "run"] },
                            { name: "docker:dind" }]
             },
             allow_failure: false,

spec/lib/gitlab/ci/config/entry/image_spec.rb

@@ -38,7 +38,7 @@ describe Gitlab::Ci::Config::Entry::Image do
   end
 
   context 'when configuration is a hash' do
-    let(:config) { { name: 'ruby:2.2', entrypoint: ['/bin/sh', 'run'] } }
+    let(:config) { { name: 'ruby:2.2', entrypoint: %w(/bin/sh run) } }
 
     describe '#value' do
       it 'returns image hash' do
@@ -66,7 +66,7 @@ describe Gitlab::Ci::Config::Entry::Image do
 
     describe '#entrypoint' do
       it "returns image's entrypoint" do
-        expect(entry.entrypoint).to eq ['/bin/sh', 'run']
+        expect(entry.entrypoint).to eq %w(/bin/sh run)
       end
     end
   end

spec/lib/gitlab/ci/config/entry/service_spec.rb

@@ -43,7 +43,7 @@ describe Gitlab::Ci::Config::Entry::Service do
 
   context 'when configuration is a hash' do
     let(:config) do
-      { name: 'postgresql:9.5', alias: 'db', command: ['cmd', 'run'], entrypoint: ['/bin/sh', 'run'] }
+      { name: 'postgresql:9.5', alias: 'db', command: %w(cmd run), entrypoint: %w(/bin/sh run) }
     end
 
     describe '#valid?' do
@@ -72,13 +72,13 @@ describe Gitlab::Ci::Config::Entry::Service do
 
     describe '#command' do
       it "returns service's command" do
-        expect(entry.command).to eq ['cmd', 'run']
+        expect(entry.command).to eq %w(cmd run)
       end
     end
 
     describe '#entrypoint' do
       it "returns service's entrypoint" do
-        expect(entry.entrypoint).to eq ['/bin/sh', 'run']
+        expect(entry.entrypoint).to eq %w(/bin/sh run)
       end
     end
   end