PEL: Deleted PELs moved to new folder under logs

 - PELs whose corresponding event logs have been deleted
   will be available in the archive folder.
 - Archive folder size is tracked under sizeWarning() function.
 - Archived PELs log can be viewed using peltool with flag --archive.
 - PELs deleted using peltool is not archived.
 - Updated README.md

Change-Id: Ie2c1b4c2ca30fb79904bc9d582a01ef8102aed0e
Signed-off-by: Sumit Kumar <sumit_kumar@in.ibm.com>
diff --git a/test/openpower-pels/pel_manager_test.cpp b/test/openpower-pels/pel_manager_test.cpp
index 9285c13..cd940ff 100644
--- a/test/openpower-pels/pel_manager_test.cpp
+++ b/test/openpower-pels/pel_manager_test.cpp
@@ -816,7 +816,7 @@
 
     // Delete them all at once
     auto logPath = getPELRepoPath() / "logs";
-    std::string cmd = "rm " + logPath.string() + "/*";
+    std::string cmd = "rm " + logPath.string() + "/*_*";
 
     {
         auto rc = system(cmd.c_str());