[IOT-1179] Adding rt and if into response of Get request to doxm and pstat

[IOT-1179] Adding rt and if into response of Get request to doxm and pstat

Issue: Response of GET request to /oic/sec/doxm resource has problem(no "rt" and "if" property)
       Per the core spec, every Resource shall have both rt and if.
Solution : Adding rt and if into response payload of Get request to doxm and pstat

Patch1,2 : Apply patch
Patch 3,4,5: Apply dongik's review

Change-Id: I6f9ad75194f9baa6c9dda25f742e38b790cd6cb7
Signed-off-by: js126.lee <js126.lee@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/9167
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Randeep Singh <randeep.s@samsung.com>