Add codes for trust anchor
- Add trust-anchor related variables in manifest structure
- Add realted info in xsd files
Related changes:
[tpk-manifest-handlers] : https://review.tizen.org/gerrit/136315
[app-installers] : https://review.tizen.org/gerrit/136316
[wgt-backend] : https://review.tizen.org/gerrit/136858
[wgt-manifest-handlers] : https://review.tizen.org/gerrit/136866
[tpk-backend] : https://review.tizen.org/gerrit/137370
Change-Id: Ia5ca75479095c573c89242df3cee9c92496232c1
Signed-off-by: Junghyun Yeon <jungh.yeon@samsung.com>