add: always use UTC for virtual package versions

src/add.c

@@ -90,7 +90,7 @@ static struct apk_package *create_virtual_package(struct apk_database *db, struc
 	time_t now = apk_time();
 	pid_t pid = getpid();
 
-	localtime_r(&now, &tm);
+	gmtime_r(&now, &tm);
 	strftime(ver, sizeof ver, "%Y%m%d.%H%M%S", &tm);
 
 	virtpkg = apk_pkg_new();

test/solver.sh

@@ -4,7 +4,6 @@ get_block() {
 	awk '/^@'$1'/{p=1;next} /^@/{p=0} p{print}'
 }
 
-export TZ=UTC
 APK_TEST="../src/apk-test"
 TEST_TO_RUN="$@"