Refactor: Move watch to ubi

watch is ubi specific functions, move it to ubi dir.

Tested: On the last commit of the patch series, run code update and
        factory reset on Witherspoon and all work fine.

Change-Id: Ia7f6b6de845ddd40e2a32ad626d3b7af9074c7f3
Signed-off-by: Lei YU <mine260309@gmail.com>
diff --git a/test/Makefile.am b/test/Makefile.am
index 3dc6960..c4165ec 100755
--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -34,7 +34,7 @@
 	$(top_builddir)/openpower_update_manager-activation.o \
 	$(top_builddir)/openpower_update_manager-version.o \
 	$(top_builddir)/openpower_update_manager-serialize.o \
-	$(top_builddir)/openpower_update_manager-watch.o \
+	$(top_builddir)/ubi/openpower_update_manager-watch.o \
 	$(top_builddir)/openpower_update_manager-item_updater.o \
 	$(top_builddir)/org/openbmc/Associations/openpower_update_manager-server.o \
 	$(top_builddir)/image_verify.cpp \