Improve error messaging in O2 chemistry

[fvitt]

What is the feature/what would you like to discuss?

Improve the error messaging and abort from chemistry in cases that prognose O2 and don't include O2 mixing ratios in the IC file.
Currently, when this occurs the cesm.log file get flooded with these error messages:

  calc_o2srb : o2col(k:k+1),xscho2(k:k+1,i) =   2.093606006991771E-011
   2.080048598016652E-011  0.000000000000000E+000  0.000000000000000E+000
   @ i,k =            1           1

Is there anyone in particular you want to be part of this conversation?

No response

Will this change (regression test) answers?

No

Will you be implementing this enhancement yourself?

Yes