Change fqdn in file /etc/hosts to be stripped of the trailing dot

Signed-off-by: Francesco Giordano <giordafr@amazon.it>

Author: francesco-giordano

CHANGELOG.md

@@ -46,6 +46,7 @@ This file is used to list changes made in each version of the AWS ParallelCluste
   - yum-epel-4.5.0 (from yum-epel-4.1.2)
 - Disable `aws-ubuntu-eni-helper` service, available in Deep Learning AMIs, to avoid conflicts with `configure_nw_interface.sh` when configuring instances with multiple network cards.
 - Set MTU to 9001 for all the network interfaces when configuring instances with multiple network cards.
+- Remove the trailing dot when configuring the compute node FQDN.
 
 3.1.4
 ------

cookbooks/aws-parallelcluster-slurm/recipes/init_dns.rb

@@ -97,6 +97,6 @@
 replace_or_add "set fqdn in the /etc/hosts" do
   path "/etc/hosts"
   pattern "^#{node['ec2']['local_ipv4']}\s+"
-  line(lazy { "#{node['ec2']['local_ipv4']} #{node['cluster']['assigned_hostname']} #{node['cluster']['assigned_short_hostname']}" })
+  line(lazy { "#{node['ec2']['local_ipv4']} #{node['cluster']['assigned_hostname'].chomp('.')} #{node['cluster']['assigned_short_hostname']}" })
   notifies :reload, "ohai[reload_hostname]"
 end