PEL: Change external PEL trace to debug

Seeing when the host sends down PELs probably isn't important enough to
put in the regular journal.  If someone really wanted to know that, they
could look at the timestamps of the PEL files.  Changing the trace to
debug so there is still the ability to turn it on if desired.

Signed-off-by: Matt Spinler <spinler@us.ibm.com>
Change-Id: Ic463576f05ed69faed910b68aacfb45f6b907072
diff --git a/extensions/openpower-pels/manager.cpp b/extensions/openpower-pels/manager.cpp
index ca8c54c..e50d627 100644
--- a/extensions/openpower-pels/manager.cpp
+++ b/extensions/openpower-pels/manager.cpp
@@ -136,7 +136,7 @@
 
         try
         {
-            log<level::INFO>(
+            log<level::DEBUG>(
                 fmt::format("Adding external PEL {:#x} (BMC ID {}) to repo",
                             pel->id(), obmcLogID)
                     .c_str());