Add migrate script for removed cert-svc store API

Add migrate script for removed cert-svc store API

cert svc API in cert-service.h is removed and certificates saved by
those API could be used through key-manager API after certificates
migrated.
(related cert-svc commit:
    project  : platform/core/security/cert-svc
    commitid : 3f2d8b2afcbefa5d2668a08bcd2a3acd25ffe067)

For now added script only moves certs directory from old cert-svc path
to key-manager data directory. Reading those resources and save to
key-manager db when service loaded is TODO

Change-Id: I54019a31d8b7549a770d8acf0da8df28be6f99a6
Signed-off-by: Kyungwook Tak <k.tak@samsung.com>