Changing the plotform validation to power for IBM power servers

earlier we were validating "ppc" for power server, Now it has changed
to power as from RH10 onwards this has been changed and the utility is also now
returning powerpc

Signed-off-by: Naresh Bannoth <nbannoth@in.ibm.com>

Author: Naresh-ibm

io/disk/disk_info.py

@@ -54,7 +54,7 @@ def setUp(self):
         pkg = ""
         device = self.params.get('disk', default=None)
         self.disk = disk.get_absolute_disk_path(device)
-        if 'ppc' not in cpu.get_arch():
+        if 'power' not in cpu.get_arch():
             self.cancel("Processor is not ppc64")
         self.dirs = self.params.get('dir', default=self.workdir)
         self.fstype = self.params.get('fs', default='ext4')

io/pci/pci_hotplug.py

@@ -47,7 +47,7 @@ def setUp(self):
         """
         Setup the device.
         """
-        if 'ppc' not in cpu.get_arch():
+        if 'power' not in cpu.get_arch():
             self.cancel("Processor is not ppc64")
         if os.path.exists('/proc/device-tree/bmc'):
             self.cancel("Test Unsupported! on this platform")

memory/memhotplug.py

@@ -195,7 +195,7 @@ def test_hotplug_toggle(self):
         self.__error_check()
 
     def test_dlpar_mem_hotplug(self):
-        if 'ppc' in cpu.get_arch() and 'PowerNV' not in open('/proc/cpuinfo', 'r').read():
+        if 'power' in cpu.get_arch() and 'PowerNV' not in open('/proc/cpuinfo', 'r').read():
             if b"mem_dlpar=yes" in process.system_output("drmgr -C", ignore_status=True, shell=True):
                 self.log.info("\nDLPAR remove memory operation\n")
                 for _ in range(len(self.blocks_hotpluggable) // 2):