Merge branch 'post_receive-spaces' into 'master'

Removes spaces in log messages.

refs:
- 6f7ccea6
- 7121a58e
- f54bf003

none of them seem to have added extra space deliberately (commit message is about something else)

## Why was this MR needed?

The spaces caused confusion when trying to analyze the logs, there was no space in user name, but log message indicated there was.

See merge request !7223

app/workers/post_receive.rb

@@ -16,7 +16,7 @@ class PostReceive
     post_received = Gitlab::GitPostReceive.new(repo_path, identifier, changes)
     if post_received.project.nil?
-      log("Triggered hook for non-existing project with full path \"#{repo_path} \"")
+      log("Triggered hook for non-existing project with full path \"#{repo_path}\"")
       return false
     end
@@ -25,7 +25,7 @@ class PostReceive
     elsif post_received.regular_project?
       process_project_changes(post_received)
     else
-      log("Triggered hook for unidentifiable repository type with full path \"#{repo_path} \"")
+      log("Triggered hook for unidentifiable repository type with full path \"#{repo_path}\"")
       false
     end
   end
@@ -37,7 +37,7 @@ class PostReceive
       @user ||= post_received.identify(newrev)
       unless @user
-        log("Triggered hook for non-existing user \"#{post_received.identifier} \"")
+        log("Triggered hook for non-existing user \"#{post_received.identifier}\"")
         return false
       end