Excluding arch s390x for dsdp?

Hi s390 porters,

I admit I have no better clue than excluding s390x from the list of
architectures to fix bug #857067.  Do you see any better option since
this would as well exclude some rdepends of libdsdp-5.8gf like

    python-cvxopt
    python-openopt
    python-statsmodels
    sagemath
    python-mvpa2
    python-pandas
    python-seaborn

and lots of dependencies of the latter two.

Any hint how to save dsdp for s390x would be really welcome.

Kind regards

      Andreas.