Bug#1062356: adios2: flaky autopkgtest (host dependent): times out on big host

[Drew Parsons]

Source: adios2
Followup-For: Bug #1062356

The flakey test is adios2-mpi-examples. debian/tests is building and
running them manually, and running on only 3 processors (mpirun -n 3)
So the problem can't be overload of the machine.

I'll just skip insituGlobalArraysReaderNxN_mpi.

For reference, upstream is making some changes to make it more
reliable to run tests against the installed library,
https://github.com/ornladios/ADIOS2/pull/3906
also
https://github.com/ornladios/ADIOS2/pull/3820
Not certain that that directly makes insituGlobalArraysReaderNxN_mpi
more reliable though.