Move REST software manager from redfish to extended/code_update/ directory

Redfish code changes for the same are WIP.

Change-Id: I988aaf3350f2ff2966138e0a7dd21d79b41093cb
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/redfish/extended/test_software_manager.robot b/extended/code_update/test_software_manager.robot
similarity index 100%
rename from redfish/extended/test_software_manager.robot
rename to extended/code_update/test_software_manager.robot