phosphor-software-manager: Replace pythonnative with python3native

Change-Id: If7c60c67fc6473cdf364fdbfbef1514ca11ff142
Signed-off-by: Adriana Kobylak <anoo@us.ibm.com>
diff --git a/recipes-phosphor/flash/phosphor-software-manager_git.bb b/recipes-phosphor/flash/phosphor-software-manager_git.bb
index ca9471e..a32c3db 100644
--- a/recipes-phosphor/flash/phosphor-software-manager_git.bb
+++ b/recipes-phosphor/flash/phosphor-software-manager_git.bb
@@ -30,7 +30,7 @@
 
 inherit autotools pkgconfig
 inherit obmc-phosphor-dbus-service
-inherit pythonnative
+inherit python3native
 inherit ${@bb.utils.contains('DISTRO_FEATURES', 'obmc-ubi-fs', 'phosphor-software-manager-ubi-fs', '', d)}
 
 DEPENDS += " \