Auto merge of #2520 - vheon:fix-togglelogs, r=micbou

Use bang version of `normal`

Fixes #2519

# PR Prelude

Thank you for working on YCM! :)

**Please complete these steps and check these boxes (by putting an `x` inside
the brackets) _before_ filing your PR:**

- [x] I have read and understood YCM's [CONTRIBUTING][cont] document.
- [x] I have read and understood YCM's [CODE_OF_CONDUCT][code] document.
- [x] I have included tests for the changes in my PR. If not, I have included a
  rationale for why I haven't.
- [x] **I understand my PR may be closed if it becomes obvious I didn't
  actually perform all of these steps.**

# Why this change is necessary and useful

[Please explain **in detail** why the changes in this PR are needed.]

[cont]: https://github.com/Valloric/YouCompleteMe/blob/master/CONTRIBUTING.md
[code]: https://github.com/Valloric/YouCompleteMe/blob/master/CODE_OF_CONDUCT.md

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python/ycm/tests/vimsupport_test.py

@@ -1374,7 +1374,7 @@ def OpenFilename_test( vim_current, vim_command ):
     call( '12split {0}'.format( __file__ ) ),
     call( "exec "
           "'au BufEnter <buffer> :silent! checktime {0}'".format( __file__ ) ),
-    call( 'silent! normal G zz' ),
+    call( 'silent! normal! Gzz' ),
     call( 'silent! wincmd p' )
   ] )
 

python/ycm/vimsupport.py

@@ -1034,4 +1034,4 @@ def _SetUpLoadedBuffer( command, filename, fix, position, watch ):
                  .format( filename ) )
 
   if position == 'end':
-    vim.command( 'silent! normal G zz' )
+    vim.command( 'silent! normal! Gzz' )