buildtools-tarball: export OPENSSL_CONF in environment setup
The autobuilder has been experiencing SSL: CERTIFICATE_VERIFY_FAILED
errors during error report uploads when using buildtools due to looking
for certs in /opt/poky
(From OE-Core rev: 197f1d5d14b8e57295f5a81c03c86abba5328614)
Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>