Make sure we're testing blank lines and comments in env files

Signed-off-by: Aanand Prasad <[email protected]>

tests/fixtures/env/one.env

@@ -1,4 +1,11 @@
+# Keep the blank lines and comments in this file, please
+
 ONE=2
 TWO=1
+
+   # (thanks)
+
 THREE=3
+
 FOO=bar
+# FOO=somethingelse