(FACT-3438) Handle os.architecture fact for debian aarch64

Author: shubhamshinde360

acceptance/lib/facter/acceptance/base_fact_utils.rb

@@ -79,9 +79,15 @@ def debian_expected_facts(agent)
         if agent['platform'] =~ /amd64/
           os_arch     = 'amd64'
           os_hardware = 'x86_64'
+          processor_model_pattern = /(Intel\(R\).*)|(AMD.*)/
+        elsif agent['platform'] =~ /aarch64/
+          os_arch     = 'aarch64'
+          os_hardware = 'aarch64'
+          processor_model_pattern = // # FACT-3439 - facter doesn't figure out the processor type on these machines 
         else
           os_arch     = 'i386'
           os_hardware = 'i686'
+          processor_model_pattern = /(Intel\(R\).*)|(AMD.*)/
         end
 
         expected_facts = {
@@ -101,7 +107,7 @@ def debian_expected_facts(agent)
           'processors.count' => /[1-9]/,
           'processors.physicalcount' => /[1-9]/,
           'processors.isa' => /unknown|#{os_hardware}/,
-          'processors.models' => /(Intel\(R\).*)|(AMD.*)/,
+          'processors.models' => processor_model_pattern,
           'kernel' => 'Linux',
           'kernelrelease' => /\d+\.\d+\.\d+/,
           'kernelversion' => /\d+\.\d+/,