py3: add b'' prefixes in tests/test-bundle2-pushback.t
This makes the test run on Python 3.
# skip-blame because just b'' prefixes.
Differential Revision: https://phab.mercurial-scm.org/D3834
# See http://EditorConfig.org for the specification
root = true
[*.py]
indent_size = 4
indent_style = space
trim_trailing_whitespace = true
[*.{c,h}]
indent_size = 8
indent_style = tab
trim_trailing_whitespace = true
[*.t]
indent_size = 2
indent_style = space
trim_trailing_whitespace = false