Update PEL severity

Updating PEL severity for callback failure to informational.
No need to log predective PEL in this scenario.

Change-Id: I2982b48c51f1d9af44d2bc4ab328e8ac3332c1a7
Signed-off-by: Sunny Srivastava <sunnsr25@in.ibm.com>
diff --git a/vpd-manager/src/listener.cpp b/vpd-manager/src/listener.cpp
index 49825fd..caceeea 100644
--- a/vpd-manager/src/listener.cpp
+++ b/vpd-manager/src/listener.cpp
@@ -191,7 +191,7 @@
     catch (const std::exception& l_ex)
     {
         EventLogger::createSyncPel(
-            EventLogger::getErrorType(l_ex), types::SeverityType::Warning,
+            EventLogger::getErrorType(l_ex), types::SeverityType::Informational,
             __FILE__, __FUNCTION__, 0,
             "Register presence change callback failed, reason: " +
                 std::string(l_ex.what()),
@@ -237,7 +237,7 @@
     catch (const std::exception& l_ex)
     {
         EventLogger::createSyncPel(
-            EventLogger::getErrorType(l_ex), types::SeverityType::Warning,
+            EventLogger::getErrorType(l_ex), types::SeverityType::Informational,
             __FILE__, __FUNCTION__, 0,
             "Process presence change callback failed, reason: " +
                 std::string(l_ex.what()),