pdmgen: Require uppercase meta keys

journald ignores lowercase metadata keys so require them
to be uppercase.  Abort the config file parse when lowercase
keys are found.

Change-Id: Icffffdc6680b4d305329c3395f8e2fda6210964f
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/src/test/yaml/pathgentest/groupone.yaml b/src/test/yaml/pathgentest/groupone.yaml
index a4d5b57..7985b47 100644
--- a/src/test/yaml/pathgentest/groupone.yaml
+++ b/src/test/yaml/pathgentest/groupone.yaml
@@ -5,24 +5,24 @@
   class: group
   group: path
   members:
-    - meta: path1
+    - meta: PATH1
       path: /xyz/openbmc_project/testing/inst1
-    - meta: path1
+    - meta: PATH1
       path: /xyz/openbmc_project/testing/inst2
-    - meta: path1
+    - meta: PATH1
       path: /xyz/openbmc_project/testing/inst3
-    - meta: path1
+    - meta: PATH1
       path: /xyz/openbmc_project/testing/inst4
 
 - name: test path group 2
   class: group
   group: path
   members:
-    - meta: path3
+    - meta: PATH3
       path: /xyz/openbmc_project/testing/inst1
-    - meta: path3
+    - meta: PATH3
       path: /xyz/openbmc_project/testing/inst2
-    - meta: path3
+    - meta: PATH3
       path: /xyz/openbmc_project/testing/inst3
-    - meta: path3
+    - meta: PATH3
       path: /xyz/openbmc_project/testing/inst4