history/ticket links in kea core and premium Changelogs

In both Changelogs, at the bottom we have a note how to access tickets. Kea core:

For complete code revision history, see
	http://git.bind10.isc.org/cgi-bin/cgit.cgi/bind10
Specific git changesets can be accessed at:
	http://git.bind10.isc.org/cgi-bin/cgit.cgi/bind10/commit/?id=rrr
or after cloning the original git repository by executing:
	% git diff rrrr^ rrrr
Subversion changesets are not accessible any more.  The subversion
revision numbers will be replaced with corresponding git revisions.
Trac tickets can be accessed at: https://bind10.isc.org/ticket/nnn

for premium:

Trac tickets can be accessed at: https://oldkea.isc.org/ticket/nnn

Time to update both of this files.