Bugfix: copy plugin assumed always that all commands like cp, copy, xcopy are

shell command. In fact copy and xcopy are shell commands under Windows and 'cp'
is always a separate app. not shell command e.g. in Windows.

workspace_tools/host_tests/host_tests_plugins/host_test_plugins.py

@@ -106,6 +106,7 @@ class HostTestPluginBase:
         """ Runs command from command line.
         """
         result = True
+        ret = 0
         try:
             ret = call(cmd, shell=shell)
             if ret:

workspace_tools/host_tests/host_tests_plugins/module_copy_shell.py

@@ -51,10 +51,11 @@ class HostTestPluginCopyMethod_Shell(HostTestPluginBase):
             if capabilitity == 'shell':
                 if os.name == 'nt': capabilitity = 'copy'
                 elif os.name == 'posix': capabilitity = 'cp'
-            if capabilitity == 'cp' or capabilitity == 'copy' or capabilitity == 'copy':
+            if capabilitity == 'cp' or capabilitity == 'copy' or capabilitity == 'xcopy':
                 copy_method = capabilitity
                 cmd = [copy_method, image_path, destination_path]
-                result = self.run_command(cmd)
+                shell = not capabilitity == 'cp'
+                result = self.run_command(cmd, shell=shell)
         return result