lf_testmod: Make sure settings are flushed.

Utils:  Add option to doCmd to allow waiting for arbitrary text,
that way we can ignore intervening 'RSLT' lines when doing batched
cmds.

LANforge/Utils.pm

@@ -87,6 +87,11 @@ sub doCmd {
    my $self = shift;
    my $cmd  = shift;
    my $nowait = shift;
+   my $waitfor = shift;
+
+   if (!defined($waitfor)) {
+      $waitfor = '/ >>RSLT:(.*)/';
+   }
 
    #print "CMD[[$cmd]]\n";
    my $t = ${$self->{telnet}};
@@ -99,7 +104,7 @@ sub doCmd {
       return "";
    }
 
-   my @rslt = $t->waitfor('/ >>RSLT:(.*)/');
+   my @rslt = $t->waitfor($waitfor);
    if ( !$self->cli_rcv_silent() ) {
       print "**************\n@rslt\n................\n\n";
    }

lf_testmod.pl

@@ -183,8 +183,18 @@ elsif ($::action eq "set") {
       }
 
       $cmd = "add_text_blob '$test_type' '$test_name' $ln";
-      $::utils->doCmd($cmd, 1);  # send and do not wait for result
+      print("$cmd\n");
+      if ($i % 25 == 0) {
+         $::utils->doCmd($cmd, 1);  # send and do not wait for result
+      }
+      else {
+         $::utils->doCmd($cmd);  # send and wait for result
+      }
    }
+
+   # Wait until we complete processing of all cmds.
+   $cmd = "gossip __gossip_test__";
+   $::utils->doCmd($cmd, 0, "/__gossip_test__/");
 }
 else {
   die("Unknown action: $::action\n$::usage\n");