Make fixes to pass rubocop

Guardfile

@@ -21,4 +21,3 @@ guard 'rspec' do
   watch(%r{^spec/acceptance/(.+)\.feature$})
   watch(%r{^spec/acceptance/steps/(.+)_steps\.rb$})   { |m| Dir[File.join("**/#{m[1]}.feature")][0] || 'spec/acceptance' }
 end
-

lib/gitlab_access_status.rb

@@ -15,6 +15,6 @@ class GitAccessStatus
   end
 
   def to_json
-    {status: @status, message: @message}.to_json
+    { status: @status, message: @message }.to_json
   end
-end
+end
\ No newline at end of file

lib/gitlab_post_receive.rb

@@ -34,19 +34,19 @@ class GitlabPostReceive
     # A standard terminal window is (at least) 80 characters wide.
     total_width = 80
 
-    # Git prefixes remote messages with "remote: ", so this width is subtracted 
+    # Git prefixes remote messages with "remote: ", so this width is subtracted
     # from the width available to us.
     total_width -= "remote: ".length
 
-    # Our centered text shouldn't start or end right at the edge of the window, 
+    # Our centered text shouldn't start or end right at the edge of the window,
     # so we add some horizontal padding: 2 chars on either side.
     text_width = total_width - 2 * 2
 
-    # Automatically wrap message at text_width (= 68) characters: 
-    # Splits the message up into the longest possible chunks matching 
+    # Automatically wrap message at text_width (= 68) characters:
+    # Splits the message up into the longest possible chunks matching
     # "<between 0 and text_width characters><space or end-of-line>".
-    # The last result is always an empty string (0 chars and the end-of-line), 
-    # so drop that. 
+    # The last result is always an empty string (0 chars and the end-of-line),
+    # so drop that.
     # message.scan returns a nested array of capture groups, so flatten.
     lines = message.scan(/(.{,#{text_width}})(?:\s|$)/)[0...-1].flatten
 
@@ -67,7 +67,7 @@ class GitlabPostReceive
 
   def update_redis
     queue = "#{config.redis_namespace}:queue:post_receive"
-    msg = JSON.dump({'class' => 'PostReceive', 'args' => [@repo_path, @actor, @changes]})
+    msg = JSON.dump({ 'class' => 'PostReceive', 'args' => [@repo_path, @actor, @changes] })
     if system(*config.redis_command, 'rpush', queue, msg,
               err: '/dev/null', out: '/dev/null')
       return true

lib/gitlab_shell.rb

@@ -91,7 +91,7 @@ class GitlabShell
 
   # This method is not covered by Rspec because it ends the current Ruby process.
   def exec_cmd(*args)
-    Kernel::exec({'PATH' => ENV['PATH'], 'LD_LIBRARY_PATH' => ENV['LD_LIBRARY_PATH'], 'GL_ID' => ENV['GL_ID']}, *args, unsetenv_others: true)
+    Kernel::exec({ 'PATH' => ENV['PATH'], 'LD_LIBRARY_PATH' => ENV['LD_LIBRARY_PATH'], 'GL_ID' => ENV['GL_ID'] }, *args, unsetenv_others: true)
   end
 
   def api