[Agent 1.1.2] Change windows unzip exit status logging from debug to error

Why is this change needed?
---------
Prior to this change, windows unzip util had debug log level instead of error

How does it address the issue?
---------
This change will log the exit status as error instead of debug

Author: Anandaraju Coimbatore Sivaraju

Diff for: lib/instance_agent/platform/windows_util.rb

@@ -100,7 +100,7 @@ def self.execute_zip_command(cmd)
 
       if exit_status != 0
         msg = "Error extracting zip archive: #{exit_status}"
-        log(:debug, msg)
+        log(:error, msg)
         raise msg
       end
     end