Update libcurl/SSL ciphers on Centos

// UPDATE LIBCURL CENTOS

rpm -Uvh http://cityfan.mirror.digitalpacific.com.au/contrib/yum-repo/city-fan.org-release-1-13.rhel6.noarch.rpm
yum upgrade libcurl

## NOTE ##
newer package (city-fan.org-release-2-1.rhel6.noarch.rpm : 01-Feb-2018 16:00) : doesn't contain proper libcurl upgrades

curl --version
curl 7.54.0 (x86_64-redhat-linux-gnu) libcurl/7.54.0 OpenSSL/1.0.1e zlib/1.2.3 c-ares/1.12.0 libssh2/1.8.0 nghttp2/1.6.0

-- (updated : 12-20-2018)
curl 7.63.0 (x86_64-redhat-linux-gnu) libcurl/7.63.0 OpenSSL/1.0.1e zlib/1.2.3 c-ares/1.15.0 libssh2/1.8.0 nghttp2/1.6.0
Release-Date: 2018-12-12