Add extra_attributes to chicoma gcc

Author: altheaden

mache/spack/chicoma-cpu_gnu_mpich.yaml

@@ -101,6 +101,11 @@ spack:
         - craype/2.7.30
         - craype-accel-host
         - craype-x86-rome
+        extra_attributes:
+          compilers:
+            c: /opt/spack/linux-centos8-x86_64/gcc-9.3.0/gcc-11.2.0-bgddrif/bin/gcc
+            cxx: /opt/spack/linux-centos8-x86_64/gcc-9.3.0/gcc-11.2.0-bgddrif/bin/g++
+            fortran: /opt/spack/linux-centos8-x86_64/gcc-9.3.0/gcc-11.2.0-bgddrif/bin/gfortran
       buildable: false
     cray-mpich:
       externals: