modified setHost() in OCResource for ipv6 with scope ID

modified setHost() in OCResource for ipv6 with scope ID

Since scope ID info has been appended to address info of resource object,
checking address validity logic should be modified
to check only address part of full string but not scope ID.

and added unit tests to check validation of host for constructResourceObject.

Change-Id: I6d1771a5573bf6324c8565adb3ff2abb53c2ac76
Signed-off-by: Jaewook Jung <jw0213.jung@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/10129
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Larry Sachs <larry.j.sachs@intel.com>
Reviewed-by: Rick Bell <richard.s.bell@intel.com>
Reviewed-by: Dave Thaler <dthaler@microsoft.com>
Reviewed-by: Ziran Sun <ziran.sun@samsung.com>
Reviewed-by: Ashok Babu Channa <ashok.channa@samsung.com>