Change Cached Data type from map to ResourceAttributes.

Change Cached Data type from map to ResourceAttributes.

change cache callback function parameter.
change getCachedData return type.
update getter member method to const member method.
change constant value to defined value.

Change-Id: Iec5af33301dfedf625fd9fcb87a989a05246c687
Signed-off-by: jyong2.kim <jyong2.kim@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/1325
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Uze Choi <uzchoi@samsung.com>
Tested-by: Uze Choi <uzchoi@samsung.com>