We're apparently unable to have an empty last line in yaml literal strings.

tests/integration/files/file/base/issue-1879/step-1.sls

@@ -1,5 +1,4 @@
 /tmp/salttest/issue-1879:
-      
   file.append:
     - text: |
         # set variable identifying the chroot you work in (used in the prompt below)

tests/integration/modules/state.py

@@ -117,8 +117,11 @@ fi
 if [ -f /etc/bash_completion ] && ! shopt -oq posix; then
     . /etc/bash_completion
 fi
-
 '''
+        # Delete if exiting
+        if os.path.isfile('/tmp/salttest/issue-1879'):
+            os.unlink('/tmp/salttest/issue-1879')
+
         # Create the file
         self.run_function('state.sls', mods='issue-1879')
         # The first append