Add 'sct' (Supported Credential Types) in doxm resource.

Add 'sct' (Supported Credential Types) in doxm resource.
- Implements madatory property 'sct' in doxm resource.

1. Modify marshalling/Unmarshalling functions in doxmresource.c.
2. Modify all SVR databases that have 'doxm' resource.

[Patch #2] Modify property(attribute ID) and wrong usage of a type for sct.
[Patch #3] Rebase & Fix Arduino build error
[Patch #4] Fix Provisioning C++ Sample build error
[Patch #5] Add 'sct' to resource/provisioning/example/xxx.json
[Patch #6] Updated xxx_client.json acl perms

Change-Id: I4340de22a138437f4307639a2e05dbe8a5affb8b
Signed-off-by: Woochul Shim <woochul.shim@samsung.com>
Signed-off-by: Ashwini Kumar <k.ashwini@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/2470
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Sachin Agrawal <sachin.agrawal@intel.com>