Yocto 2.3

Move OpenBMC to Yocto 2.3(pyro).

Tested: Built and verified Witherspoon and Palmetto images
Change-Id: I50744030e771f4850afc2a93a10d3507e76d36bc
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
Resolves: openbmc/openbmc#2461
diff --git a/import-layers/yocto-poky/meta/lib/oe/packagegroup.py b/import-layers/yocto-poky/meta/lib/oe/packagegroup.py
index 9781927..4bc5d3e 100644
--- a/import-layers/yocto-poky/meta/lib/oe/packagegroup.py
+++ b/import-layers/yocto-poky/meta/lib/oe/packagegroup.py
@@ -1,17 +1,17 @@
 import itertools
 
 def is_optional(feature, d):
-    packages = d.getVar("FEATURE_PACKAGES_%s" % feature, True)
+    packages = d.getVar("FEATURE_PACKAGES_%s" % feature)
     if packages:
-        return bool(d.getVarFlag("FEATURE_PACKAGES_%s" % feature, "optional", True))
+        return bool(d.getVarFlag("FEATURE_PACKAGES_%s" % feature, "optional"))
     else:
-        return bool(d.getVarFlag("PACKAGE_GROUP_%s" % feature, "optional", True))
+        return bool(d.getVarFlag("PACKAGE_GROUP_%s" % feature, "optional"))
 
 def packages(features, d):
     for feature in features:
-        packages = d.getVar("FEATURE_PACKAGES_%s" % feature, True)
+        packages = d.getVar("FEATURE_PACKAGES_%s" % feature)
         if not packages:
-            packages = d.getVar("PACKAGE_GROUP_%s" % feature, True)
+            packages = d.getVar("PACKAGE_GROUP_%s" % feature)
         for pkg in (packages or "").split():
             yield pkg