Update Archive Path of Build Artifacts

There are some changes on install directory structure of TF-M.
Contents in 'export/tfm' are moved to 'interface'.
So the archive path needs to be changed to 'interface'.

Signed-off-by: Xinyu Zhang <xinyu.zhang@arm.com>
Change-Id: I6d1fd9f2db5613a8601841240b358017c8ad3201
diff --git a/jenkins/build-config.jpl b/jenkins/build-config.jpl
index 8bfc1c0..21e7ea0 100644
--- a/jenkins/build-config.jpl
+++ b/jenkins/build-config.jpl
@@ -99,7 +99,7 @@
     }
     stage("Post") {
       archiveArtifacts 'trusted-firmware-m/build/bin/**'
-      archiveArtifacts 'trusted-firmware-m/build/install/export/**'
+      archiveArtifacts 'trusted-firmware-m/build/install/interface/**'
     }
   } catch (Exception e) {
     manager.buildFailure()