Prepare for 6.2-1.17.1 release.

# Changes in version 6.2-1.17.1 - 2018-08-??

# Changes in version 6.2-1.17.1 - 2018-08-17

 * Minor changes

   - Parsing of the "as" parameter allows AS0 to be specified. It will now

     strip leading zeros. Specifying an AS number larger than the maximum

     possible with 32-bits will be treated as an error.

   - Parsing of the "as" parameter allows AS0 to be specified. It will

     now strip leading zeros. Specifying an AS number larger than the

     maximum possible with 32-bits will be treated as an error.

# Changes in version 6.2-1.17.0 - 2018-08-16

 * Medium changes

   - The "host_name" field will no longer appear in details documents.

   - Names in the "verified_host_names" and "unverified_host_names" fields

     are written in a deterministic order.

   - If a reverse domain name lookup results in either no names being found

     or an error then the lookup will be repeated at the next updater run.

   - Names in the "verified_host_names" and "unverified_host_names"

     fields are written in a deterministic order.

   - If a reverse domain name lookup results in either no names being

     found or an error then the lookup will be repeated at the next

     updater run.

# Changes in version 6.2-1.16.1 - 2018-08-13

 * Minor changes

   - Don't attempt to un-escape character sequences in contact lines

     (like "\uk") that only happen to start like escaped utf-8 characters

     (like "\u0055").

     (like "\uk") that only happen to start like escaped utf-8

     characters (like "\u0055").

# Changes in version 5.1-1.11.0 - 2018-03-14

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

  <property name="onionoo.protocol.version" value="6.2"/>

  <property name="release.version"

            value="${onionoo.protocol.version}-1.17.0-dev"/>

            value="${onionoo.protocol.version}-1.17.1"/>

  <property name="metricslibversion" value="2.4.0"/>

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

  <property name="warfile"