fix failing test by defining all default sections

previous commit 2e3055541e broke the unit tests, since it renamed
the syntastic section. Fix that and also test correctly the other
sections, that have been added (and which have not been tested until
now).

t/init.vim

@@ -59,12 +59,21 @@ describe 'init sections'
   end
 
   it 'all default statusline extensions should be blank'
+    Expect airline#parts#get('ale_error_count').raw == ''
+    Expect airline#parts#get('ale_warning_count').raw == ''
     Expect airline#parts#get('hunks').raw == ''
     Expect airline#parts#get('branch').raw == ''
-    Expect airline#parts#get('tagbar').raw == ''
-    Expect airline#parts#get('syntastic').raw == ''
     Expect airline#parts#get('eclim').raw == ''
+    Expect airline#parts#get('neomake_error_count').raw == ''
+    Expect airline#parts#get('neomake_warning_count').raw == ''
+    Expect airline#parts#get('obsession').raw == ''
+    Expect airline#parts#get('syntastic-err').raw == ''
+    Expect airline#parts#get('syntastic-warn').raw == ''
+    Expect airline#parts#get('tagbar').raw == ''
     Expect airline#parts#get('whitespace').raw == ''
+    Expect airline#parts#get('windowswap').raw == ''
+    Expect airline#parts#get('ycm_error_count').raw == ''
+    Expect airline#parts#get('ycm_warning_count').raw == ''
   end
 end