Match junit's implementation of some assertion methods.

Now that we are using vogar's junit version both on host
and target, we're hitting these implementations mismatch
on a few tests.

This explains for example the failure for:
on host, listed in knownfailures.txt.

That's a short term fix before an eventual full move to
proper junit.

(cherry picked from commit b5e896d8f32e2c15978f3841b44d3c16507fa8f3)

Change-Id: I2c59b700eadcbf84ad010f068612425f863736e7
1 file changed