Avoid checking root_volume free space on docker

Signed-off-by: Nicola Sirena <[email protected]>

Author: NSsirena

cookbooks/aws-parallelcluster-platform/test/controls/intel_hpc_spec.rb

@@ -24,7 +24,7 @@
 end
 
 control 'tag:config_intel_hpc_enough_space_on_root_volume' do
-  only_if { !instance.custom_ami? && (os_properties.centos7? && os_properties.x86?) }
+  only_if { !os_properties.on_docker? && !instance.custom_ami? }
 
   describe 'at least 10 GB of free space on root volume' do
     subject { bash("sudo -u #{node['cluster']['cluster_user']} df --block-size GB --output=avail / | tail -n1 | cut -d G -f1") }