Add internal privileges and update mapping table for 'vconf to buxton2'

Add internal privileges and update mapping table for 'vconf to buxton2'

We have been using vconf key since Tizen2.x and
recommend to converting a Tizen vconf-based app over to Buxton now.
 https://wiki.tizen.org/wiki/Buxton

Buxton uses 'cynara check' to enforce security unlike vconf using Smack.
This patch add some internal privileges to support compatibilites
for 2.x vconf-based app as below:

* http://tizen.org/privilege/internal/default/public
* http://tizen.org/privilege/internal/default/partner
* http://tizen.org/privilege/internal/default/platform
* http://tizen.org/privilege/internal/buxton/account.read
* http://tizen.org/privilege/internal/buxton/camcorder
* http://tizen.org/privilege/internal/buxton/contact.read
* http://tizen.org/privilege/internal/buxton/location
* http://tizen.org/privilege/internal/buxton/message.read
* http://tizen.org/privilege/internal/buxton/network.get
* http://tizen.org/privilege/internal/buxton/nfc
* http://tizen.org/privilege/internal/buxton/nfc.cardemulation
* http://tizen.org/privilege/internal/buxton/readonly
* http://tizen.org/privilege/internal/buxton/telephony
* http://tizen.org/privilege/internal/webappdefault

I will update a detailed history for internal privilges soon.
 https://wiki.tizen.org/wiki/Security/Tizen_3.X_Internal_Privilege_Mapping

Change-Id: Ifadada7299873e42f26b35bfc4d526c04041c0b7
Signed-off-by: jooseong.lee <jooseong.lee@samsung.com>