Correctly count processors on ARM systems. (#52884)

- Add unit tests for Linux CPU info
- Add cpuinfo output from several systems for unit tests

Co-authored-by: Abhijeet Kasurde <akasurde@redhat.com>

lib/ansible/module_utils/facts/hardware/linux.py

@@ -159,6 +159,7 @@ class LinuxHardware(Hardware):
         i = 0
         vendor_id_occurrence = 0
         model_name_occurrence = 0
+        processor_occurence = 0
         physid = 0
         coreid = 0
         sockets = {}
@@ -206,6 +207,8 @@ class LinuxHardware(Hardware):
                     vendor_id_occurrence += 1
                 if key == 'model name':
                     model_name_occurrence += 1
+                if key == 'processor':
+                    processor_occurence += 1
                 i += 1
             elif key == 'physical id':
                 physid = data[1].strip()
@@ -229,6 +232,12 @@ class LinuxHardware(Hardware):
             if vendor_id_occurrence == model_name_occurrence:
                 i = vendor_id_occurrence
 
+        # The fields for ARM CPUs do not always include 'vendor_id' or 'model name',
+        # and sometimes includes both 'processor' and 'Processor'.
+        # Always use 'processor' count for ARM systems
+        if collected_facts.get('ansible_architecture').startswith(('armv', 'aarch')):
+            i = processor_occurence
+
         # FIXME
         if collected_facts.get('ansible_architecture') != 's390x':
             if xen_paravirt: