Changed /bin to /usr/bin

Signed-off-by: Jie Chen <jiechen3@microsoft.com>

Makefile

@@ -64,14 +64,14 @@ out/delta-snp.tar.gz: out/delta.tar.gz bin/internal/tools/snp-report boot/startu
 out/delta.tar.gz: bin/init bin/vsockexec bin/cmd/gcs bin/cmd/gcstools bin/cmd/hooks/wait-paths Makefile
 	@mkdir -p out
 	rm -rf rootfs
-	mkdir -p rootfs/bin/
+	mkdir -p rootfs/usr/bin/
 	mkdir -p rootfs/info/
 	cp bin/init rootfs/
-	cp bin/vsockexec rootfs/bin/
-	cp bin/cmd/gcs rootfs/bin/
-	cp bin/cmd/gcstools rootfs/bin/
-	cp bin/cmd/hooks/wait-paths rootfs/bin/
-	for tool in $(GCS_TOOLS); do ln -s gcstools rootfs/bin/$$tool; done
+	cp bin/vsockexec rootfs/usr/bin/
+	cp bin/cmd/gcs rootfs/usr/bin/
+	cp bin/cmd/gcstools rootfs/usr/bin/
+	cp bin/cmd/hooks/wait-paths rootfs/usr/bin/
+	for tool in $(GCS_TOOLS); do ln -s gcstools rootfs/usr/bin/$$tool; done
 	git -C $(SRCROOT) rev-parse HEAD > rootfs/info/gcs.commit && \
 	git -C $(SRCROOT) rev-parse --abbrev-ref HEAD > rootfs/info/gcs.branch && \
 	date --iso-8601=minute --utc > rootfs/info/tar.date
@@ -81,6 +81,9 @@ out/delta.tar.gz: bin/init bin/vsockexec bin/cmd/gcs bin/cmd/gcstools bin/cmd/ho
 	tar -zcf $@ -C rootfs .
 	rm -rf rootfs
 
+	# # Create symlink from /usr/bin to /bin
+	# ln -s /usr/bin /bin
+
 bin/cmd/gcs bin/cmd/gcstools bin/cmd/hooks/wait-paths bin/cmd/tar2ext4 bin/internal/tools/snp-report:
 	@mkdir -p $(dir $@)
 	GOOS=linux $(GO_BUILD) -o $@ $(SRCROOT)/$(@:bin/%=%)