AlgorithmParametersTestDSA: update DSA parameters

Make sure our parameters are always positive by supplying the sign bit
and generate new, larger parameters.

(cherry picked from commit 9012a4ffa6030b7d499035012e867230d496802e)

Bug: 26413503
Change-Id: I4766639eba51ec458e2a12849639fd40c396e904
1 file changed