puppetclient: Fix a filter-syslog regex

files/puppetclient/etc/filter-syslog/puppet

@@ -5,7 +5,7 @@ puppet-agent: /^Applying configuration version '\d+'$/
 puppet-agent: /^Caching catalog for \S+$/
 puppet-agent: /^Caching certificate_revocation_list for ca$/
 puppet-agent: /^Connecting to sqlite3 database: \S+$/
-puppet-agent: /^FileBucket adding {\w+\}\w+$/
+puppet-agent: /^FileBucket adding \{\w+\}\w+$/
 puppet-agent: /^Finished catalog run in -?[\d.]+ seconds$/
 puppet-agent: /^Loading facts in \S+$/
 puppet-agent: /^Loading facts\s*$/