Fix a file.blockreplace test for Python 3
Fix a file.blockreplace test for Python 3

This test uses file.accumulated to accumulate data, to be used in the
file.blockreplace state. However, because this data is stored in a
dictionary, the iteration order is different on different versions of
Python. As it is very clearly stated that the accumulator data structure
is a dictionary, rather than modifying the file.accumulated behavior
this commit just updates the test so that it searches for all values
that it should find between the block markers.

saltstack/salt,saltstack/salt,saltstack/salt,saltstack/salt,saltstack/salt