root ca ssl certs enable/disable feature

root ca ssl certs enable/disable feature

(resource provided by ca-certificates package)
ssl ca certs hierarchy
 * orig path   : /usr/share/ca-certificates/certs
        format : openssl hash format (<subject_hash>.[0-9])
 * symlink path   : /etc/ssl/certs/* -> /usr/share/ca-certificates/certs/*
           format : same to orig format

concatenated ca bundle
 * orig path   : /var/lib/ca-certificates/ca-bundle.pem
 * symlink path : /usr/share/cert-svc/ca-certificate.crt (for backward-compatibility)

subject_hash_old format symlinks don't exist in Tizen 3.0 (it existed in lower version)
which is only needed on openssl version lower than 1.0.0 (current : 1.0.2d in Tizen 3.0)

Change-Id: I31b1f79b37b8439d534f326e9bec71e17e6a19c2
Signed-off-by: Kyungwook Tak <k.tak@samsung.com>