      <form action="{% url 'shepherd:servers' %}" method="GET">
            <div class="input-group">
              <div class="input-group-prepend">
                <span class="fa fa-search input-group-text" id="inner-server-search-addon"></span>
              </div>
              <input autocomplete="off" type="text" class="form-control" name="server"
                     placeholder="Search servers by hostname or IP..." aria-label="servers"
                     aria-describedby="inner-server-search-addo