print perl version number

Author: Jeff Whitaker

config.sh

@@ -50,6 +50,7 @@ function build_curl {
     else  # manylinux
         flags="$flags --with-ssl"
         if [[ $MB_ML_VER == "_2_28" ]]; then
+           perl -v
 	   yum_install perl-Data-Dumper
         fi
         build_openssl