[ARMPL] Fix a bug in the installation of ARM Performance Library to cover both gcc 9.3 and gcc 11.3.

Author: gmarciani

cookbooks/aws-parallelcluster-platform/resources/arm_pl/partial/_arm_pl_common.rb

@@ -127,7 +127,8 @@
         cd gcc-#{gcc_version}
         # Patch the download_prerequisites script to download GCC dependencies from our public bucket.
         # This is required to support build image in isolated environments.
-        sed -i "s#http://gcc\.gnu\.org/pub/gcc/infrastructure##{node['cluster']['artifacts_s3_url']}/dependencies/gcc/prerequisites#g" ./contrib/download_prerequisites
+        # Note: gcc 9.3 uses ftp, whereas gcc 11.3 uses http. 
+        sed -i "s#\\(ftp\\|http\\)://gcc\.gnu\.org/pub/gcc/infrastructure##{node['cluster']['artifacts_s3_url']}/dependencies/gcc/prerequisites#g" ./contrib/download_prerequisites
         ./contrib/download_prerequisites
         mkdir build && cd build
         ../configure --prefix=/opt/arm/armpl/gcc/#{gcc_version} --disable-bootstrap --enable-checking=release --enable-languages=c,c++,fortran --disable-multilib