update meta-supermicro layer for new bitbake

Signed-off-by: Ryan Sie <ryans@supermicro.com.tw>
Change-Id: I05c85576fad2dae9f9a3e90afdac7565d9cefcf4
diff --git a/meta-supermicro/meta-common/recipes-extended/pam/libpam_%.bbappend b/meta-supermicro/meta-common/recipes-extended/pam/libpam_%.bbappend
new file mode 100644
index 0000000..20fe5e4
--- /dev/null
+++ b/meta-supermicro/meta-common/recipes-extended/pam/libpam_%.bbappend
@@ -0,0 +1,4 @@
+FILESEXTRAPATHS:append := "${THISDIR}/${PN}:"
+
+SRC_URI += " file://pam.d/common-password \
+            "