swupd-client_%.bbappend: configure swupd repo URLs

[rojkov]

By default swupd checks for updates at http://example.com
and in case of fetching from an HTTPS URL it uses a
pre-defined public key which is specific to ClearLinux.

This patch configures meta-ostro to use Ostro's public
repository for software updates by default.

Fixes: IOTOS-1754

NB: Depends on https://lists.yoctoproject.org/pipermail/yocto/2016-August/031680.html accepted to meta-swupd.

[mythi]

the dependencies are now in master so let's re-trigger and check the output.

retest this please

[kad]

Should we do similar PR to ostro-os-xt ?

[mythi]

@kad we have ostroproject/ostro-os-xt/pull/8 already. We may need to take the meta-swupd fix in the bbappend too however.

[kad]

ah, ok, missed that.

[mythi]

@rojkov could you check the resulting images?

[rojkov]

@mythi at least swupd check-update works as expected

root@intel-corei7-64:~# swupd check-update
swupd-client software update checker 3.6.0
   Copyright (C) 2012-2016 Intel Corporation

Querying server version.
Attempting to download version string to memory
There are no updates available

And swupd verify fails as expected too, because updates for PR are not published

root@intel-corei7-64:~# swupd verify
swupd-client software verify 3.6.0
   Copyright (C) 2012-2016 Intel Corporation

Verifying version 16340
Attempting to download version string to memory
Failed to retrieve 16340 MoM manifest
Unable to download/verify 16340 Manifest.MoM
Possible filedescriptor leak: fd_number="3",fd_details="/dev/urandom"
Error: Verify did not fully succeed

No more "bad certificate" errors.

[mythi]

@rojkov thanks for checking! merging