tests: update uninstall test for protobuf dependency

Protobuf is now installed into the Python environment, so its dist-info
metadata files are expected to remain after uninstall. The test was updated
to ignore them.

Signed-off-by: Andrii Herheliuk <andrii@herheliuk.com>

Author: herheliuk

test/others/make/uninstall.sh

@@ -12,9 +12,18 @@ make uninstall DESTDIR=$DESTDIR
 set +x
 
 # There should be no files left (directories are OK for now)
-if [ $(find $DESTDIR -type f | wc -l) -gt 0 ]; then
+# except protobuf under Python site-packages
+
+ALLOW_RE='
+  /python[0-9.]\+/site-packages/google/.*$
+| /python[0-9.]\+/site-packages/protobuf-[0-9.]\+\.dist-info/.*$
+'
+
+LEFT=$(find "$DESTDIR" -type f | grep -vE "$ALLOW_RE" || true)
+
+if [ -n "$LEFT" ]; then
 	echo "Files left after uninstall:"
-	find $DESTDIR -type f
+	echo "$LEFT"
 	echo "FAIL"
 	exit 1
 fi