Add test for Mod -> mod in numpy lambdify.
Add test for Mod -> mod in numpy lambdify.

postvakje/sympy,mcdaniel67/sympy,kaichogami/sympy,kaushik94/sympy,madan96/sympy,oliverlee/sympy,jerli/sympy,souravsingh/sympy,Arafatk/sympy,skidzo/sympy,jaimahajan1997/sympy,rahuldan/sympy,Titan-C/sympy,drufat/sympy,Shaswat27/sympy,lindsayad/sympy,lindsayad/sympy,yashsharan/sympy,Curious72/sympy,mafiya69/sympy,jerli/sympy,chaffra/sympy,sampadsaha5/sympy,mcdaniel67/sympy,Curious72/sympy,ChristinaZografou/sympy,oliverlee/sympy,kaichogami/sympy,Davidjohnwilson/sympy,souravsingh/sympy,ga7g08/sympy,Davidjohnwilson/sympy,ahhda/sympy,ahhda/sympy,yashsharan/sympy,chaffra/sympy,aktech/sympy,hargup/sympy,skidzo/sympy,mafiya69/sympy,hargup/sympy,kaushik94/sympy,ChristinaZografou/sympy,postvakje/sympy,jaimahajan1997/sympy,Curious72/sympy,hargup/sympy,oliverlee/sympy,lindsayad/sympy,kaichogami/sympy,ga7g08/sympy,kaushik94/sympy,aktech/sympy,yashsharan/sympy,drufat/sympy,Shaswat27/sympy,Arafatk/sympy,ga7g08/sympy,sampadsaha5/sympy,souravsingh/sympy,drufat/sympy,jerli/sympy,sampadsaha5/sympy,aktech/sympy,mafiya69/sympy,Titan-C/sympy,ahhda/sympy,jaimahajan1997/sympy,Davidjohnwilson/sympy,madan96/sympy,Arafatk/sympy,skidzo/sympy,madan96/sympy,postvakje/sympy,rahuldan/sympy,ChristinaZografou/sympy,chaffra/sympy,Shaswat27/sympy,Titan-C/sympy,mcdaniel67/sympy,rahuldan/sympy