public List<ServerLocation> getServersForQueue(String group, Set<ServerLocation> excludedServers,
      int count) {
    return getServersForQueue(null, group, excludedServers, count);
  }
Pick the least loaded servers in the given group.

@param group the group, or null or "" if the client has no server group.
@param excludedServers a list of servers to exclude as choices
@param count how many distinct servers to pick.
@return a list containing the best servers. The size of the list will be less than or equal to
        count, depending on if there are enough servers available.
geode-core/src/main/java/org/apache/geode/distributed/internal/LocatorLoadSnapshot.java