Rename Version::Errors to Image::Errors

The Version interface is a public interface, and errors are being
added to it:
https://gerrit.openbmc-project.xyz/#/c/openbmc/phosphor-dbus-interfaces/+/13836/

This conflicts with the internal Version errors, so rename the
internal one to an Image namespace since that's not a public
interface and make more sense since the errors deal with failures
during image file extraction.

Tested:
  Uploaded an invalid tar file (u-boot.bin) and the new Image::Error
  was created:

    "/xyz/openbmc_project/logging/entry/2": {
      "AdditionalData": [
        "PATH=/tmp/images/u-boot.bin",
        "_PID=1348"
      ],
      "Description": "An internal BMC error occurred",
      "EventID": "None",
      "Id": 2,
      "Message": "xyz.openbmc_project.Software.Image.Error.UnTarFailure",

Change-Id: I6f6c84e2ea782c8ebc952bba4d5cee6be232f08f
Signed-off-by: Adriana Kobylak <anoo@us.ibm.com>
diff --git a/item_updater.cpp b/item_updater.cpp
index 90a97d4..6dd7a52 100644
--- a/item_updater.cpp
+++ b/item_updater.cpp
@@ -15,7 +15,7 @@
 #include <queue>
 #include <set>
 #include <string>
-#include <xyz/openbmc_project/Software/Version/error.hpp>
+#include <xyz/openbmc_project/Software/Image/error.hpp>
 
 namespace phosphor
 {
@@ -29,7 +29,7 @@
 namespace control = sdbusplus::xyz::openbmc_project::Control::server;
 
 using namespace phosphor::logging;
-using namespace sdbusplus::xyz::openbmc_project::Software::Version::Error;
+using namespace sdbusplus::xyz::openbmc_project::Software::Image::Error;
 using namespace phosphor::software::image;
 namespace fs = std::experimental::filesystem;