M #-: Skip NUMA probe on systems without NUMA (e.g. ARM64 boards) (#3732)

Signed-off-by: Victor Hansson <vhansson@opennebula.io>
(cherry picked from commit 180e901)

Author: vichansson

src/im_mad/remotes/node-probes.d/numa_usage.rb

@@ -51,6 +51,8 @@ def self.node_to_template(node, nid)
 # ------------------------------------------------------------------------------
 nodes = {}
 
+exit 0 unless Dir.exist? NUMA::NODE_PATH
+
 Dir.foreach(NUMA::NODE_PATH) do |node|
     /node(?<node_id>\d+)/ =~ node
     next unless node_id