some libpcre3* packages have from support timeframe set for xenial LTS

[Achim Behrens]

Some libpcre* packages from 16.04 have the wrong support timeframe set into the package info. Therefore they are falsely shown as unsupported on the "ubuntu-support-status" output:

~$ apt show libpcre3-dbg
Package: libpcre3-dbg
Version: 2:8.38-3.1
Priority: optional
Section: libdevel
Source: pcre3
Origin: Ubuntu
Maintainer: Ubuntu Developers <email address hidden>
Original-Maintainer: Matthew Vernon <email address hidden>
Bugs: https://bugs.launchpad.net/ubuntu/+filebug
Installed-Size: 3.514 kB
Depends: libpcre3 (= 2:8.38-3.1), libpcrecpp0v5 (= 2:8.38-3.1)
Supported: 9m
Download-Size: 692 kB
APT-Sources: http://de.archive.ubuntu.com/ubuntu xenial/main amd64 Packages
Description: Perl 5 Compatible Regular Expression Library - debug symbols
 Dies ist eine Bibliothek von Funktionen zur Unterstützung von regulären
 Ausdrücken, deren Syntax und Semantik so ähnlich wie möglich zu denen der
 Sprache Perl 5 sind.
 .
 This package contains the debug symbols,

This should be set to the 5years LTS timeframe (since its in main) and not to 9months.