intltool recipe fetch failed due to certificate issues

Hi,

I am compiling openwebrtc on ubuntu14.04 with instructions from wiki of this project. Got the below message for recipe intltool. Any work around for this or any patches to apply to this recipe?

Fetching tarball https://launchpad.net/intltool/trunk/0.51.0/%2Bdownload/intltool-0.51.0.tar.gz to /home/ret/cerbero/build/sources/local/intltool-0.51.0/intltool-0.51.0.tar.gz
Downloading https://launchpad.net/intltool/trunk/0.51.0/%2Bdownload/intltool-0.51.0.tar.gz
Running command 'wget https://launchpad.net/intltool/trunk/0.51.0/%2Bdownload/intltool-0.51.0.tar.gz -O /home/ret/cerbero/build/sources/local/intltool-0.51.0/intltool-0.51.0.tar.gz '
wget: /opt/openwebrtc-0.3/lib/libcrypto.so.1.0.0: no version information available (required by wget)
wget: /opt/openwebrtc-0.3/lib/libssl.so.1.0.0: no version information available (required by wget)
--2017-12-18 17:07:33-- https://launchpad.net/intltool/trunk/0.51.0/%2Bdownload/intltool-0.51.0.tar.gz
Resolving launchpad.net (launchpad.net)... 91.189.89.223, 91.189.89.222
Connecting to launchpad.net (launchpad.net)|91.189.89.223|:443... connected.
ERROR: cannot verify launchpad.net's certificate, issued by ‘/C=US/O=DigiCert Inc/OU=www.digicert.com/CN=DigiCert SHA2 Extended Validation Server CA’:
Unable to locally verify the issuer's authority.
To connect to launchpad.net insecurely, use `--no-check-certificate'.
Downloading https://gstreamer.freedesktop.org/src/mirror/intltool-0.51.0.tar.gz
Running command 'wget https://gstreamer.freedesktop.org/src/mirror/intltool-0.51.0.tar.gz -O /home/ret/cerbero/build/sources/local/intltool-0.51.0/intltool-0.51.0.tar.gz '
wget: /opt/openwebrtc-0.3/lib/libcrypto.so.1.0.0: no version information available (required by wget)
wget: /opt/openwebrtc-0.3/lib/libssl.so.1.0.0: no version information available (required by wget)
--2017-12-18 17:07:34-- https://gstreamer.freedesktop.org/src/mirror/intltool-0.51.0.tar.gz
Resolving gstreamer.freedesktop.org (gstreamer.freedesktop.org)... 131.252.210.176, 2610:10:20:722:a800:ff:feda:470f
Connecting to gstreamer.freedesktop.org (gstreamer.freedesktop.org)|131.252.210.176|:443... connected.
ERROR: cannot verify gstreamer.freedesktop.org's certificate, issued by ‘/C=US/O=Let's Encrypt/CN=Let's Encrypt Authority X3’:
Unable to locally verify the issuer's authority.
To connect to gstreamer.freedesktop.org insecurely, use `--no-check-certificate'.

Recipe 'intltool' failed at the build step 'fetch'
Select an action to proceed:
[0] Enter the shell
[1] Rebuild the recipe from scratch
[2] Rebuild starting from the failed step
[3] Skip recipe
[4] Abort

Thanks,
Hari.

Start with the intltool recipe and the fetch build step described in the report, then reproduce the certificate failure on Ubuntu 14.04 using the listed Launchpad and GStreamer URLs. Done means the recipe fetches intltool successfully while preserving certificate verification.

Written by the indexing model from the issue text.