Do some retries on SLP transmits

git-svn-id: https://svn.code.sf.net/p/xcat/code/xcat-core/trunk@11915 8638fb3e-16cb-4fca-ae20-7b5d299a9bcd

perl-xCAT/xCAT/SLP.pm

@@ -87,6 +87,9 @@ sub dodiscover {
 				}
 			}
 		}
+		foreach my $srvtype (@srvtypes) {
+			send_service_request_single(%args,ifacemap=>$interfaces,SrvType=>$srvtype);
+		}
 		return \%rethash;
 	}
 }