conf: make ChronoSync's sync interest lifetime configurable

refs: #4490

Change-Id: Id3eabeed1049d1208ba49c47206f73f798f37a35
diff --git a/tests/test-conf-file-processor.cpp b/tests/test-conf-file-processor.cpp
index 2249dab..65f3ee5 100644
--- a/tests/test-conf-file-processor.cpp
+++ b/tests/test-conf-file-processor.cpp
@@ -44,6 +44,7 @@
   "  lsa-refresh-time 1800\n"
   "  lsa-interest-lifetime 3\n"
   "  router-dead-interval 86400\n"
+  "  sync-interest-lifetime 10000\n"
   "  seq-dir /tmp\n"
   "}\n\n";
 
@@ -176,6 +177,7 @@
   BOOST_CHECK_EQUAL(conf.getLsaRefreshTime(), 1800);
   BOOST_CHECK_EQUAL(conf.getLsaInterestLifetime(), ndn::time::seconds(3));
   BOOST_CHECK_EQUAL(conf.getRouterDeadInterval(), 86400);
+  BOOST_CHECK_EQUAL(conf.getSyncInterestLifetime(), ndn::time::milliseconds(10000));
   BOOST_CHECK_EQUAL(conf.getSeqFileDir(), "/tmp");
 
   // Neighbors