[IOT-1361][Tizen]Using getifaddrs for get ipaddr instead of ioctl

[IOT-1361][Tizen]Using getifaddrs for get ipaddr instead of ioctl

Using getifaddrs to support getting ipv6 address in CAGetNetworkInfo()
Remove ioctl code and using getifaddrs for get ipv6 address.

Change-Id: I31816d605424833ed9324a05ab3b1e1492aab5c7
Signed-off-by: bg.chun <bg.chun@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/12249
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Ashok Babu Channa <ashok.channa@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/14217
Reviewed-by: Uze Choi <uzchoi@samsung.com>