Jenkins Tests seldomly failing - Redmine #1693

We have multiple tests seldom failing in Jenkins. Some of those are fp-exception related and those are tracked at #1677.

Others which are not are:

- MdrunTests failing with out of memory. Example: http://jenkins.gromacs.org/job/Gromacs_Gerrit_master/8143, http://jenkins.gromacs.org/job/Gromacs_Gerrit_master/8142/, http://jenkins.gromacs.org/job/Gromacs_Gerrit_master/8057. Might be only double precision

(from redmine: issue id 1693, created on 2015-02-22 by rolandschulz, closed on 2018-10-02)

Update pre-submit matrix contents

Converted a config so that we have one that uses neither MPI. Also
needed an incidental fix for the  build script to make that work.

Refs #1693

Change-Id: Ieebc939f6c9cf1d3a84681ce212e61059053cf55