various: fix error metadata for systemd rules

systemd-journald requires that log statements are "KEYWORD=%printf"
and any spaces would cause the journal metadata to be dropped.
Fix a few of them I see in the repo.

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I8c7f84bed0a919d5042e083bf3bd87001b10aaf9
diff --git a/yaml/xyz/openbmc_project/Certs.metadata.yaml b/yaml/xyz/openbmc_project/Certs.metadata.yaml
index 1d36c14..bdb77a8 100644
--- a/yaml/xyz/openbmc_project/Certs.metadata.yaml
+++ b/yaml/xyz/openbmc_project/Certs.metadata.yaml
@@ -1,4 +1,4 @@
 - name: InvalidCertificate
   meta:
-    - str: "REASON = %s"
+    - str: "REASON=%s"
       type: string