use default initialization for chain rule coeffs
use default initialization for chain rule coeffs

coefficient, pcoefficient and augcoefficient
FFroehlich/AMICI,AMICI-developer/AMICI,FFroehlich/AMICI,AMICI-developer/AMICI,FFroehlich/AMICI,AMICI-developer/AMICI,AMICI-developer/AMICI,FFroehlich/AMICI