Prepare for 7.0-1.22.0 release.

# Changes in version 7.0-1.2?.? - 2019-1?-??

# Changes in version 7.0-1.22.0 - 2019-11-28

 * Medium changes

   - Remove declared/alleged family members after they disappear from

  <property name="implementation-title" value="Onionoo" />

  <property name="onionoo.protocol.version" value="7.0"/>

  <property name="release.version"

            value="${onionoo.protocol.version}-1.21.1"/>

            value="${onionoo.protocol.version}-1.22.0"/>

  <property name="metricslibversion" value="2.9.1"/>

  <property name="jetty.version" value="-9.2.21.v20170120" />

  <property name="warfile"