Stop using --repo from .ks file

Stop using --repo from .ks file

Using --repo parameter from .ks file as a repository name is incorrect
as it doesn't point to the real repository. For example in
Tizen:Mobile porject it produces this crash:
    common.backenddb.EntityError: [Error] key repo:mobile don't exist in redis
because of --repo=mobile specified in .ks file.

The solution used in this change is to replace @BUILD_ID@ with the
current snapshot.

Fixes: #1305

Change-Id: Ic3b5b3a12b44167c48f2f8ad858629bc787a9011
Signed-off-by: Ed Bartosh <eduard.bartosh@intel.com>
Reviewed-on: https://otctools.jf.intel.com/review/6389
Tested-by: OTC Tools Tester <ed.bartosh@linux.intel.com>
Reviewed-by: Hasan Wan <hasan.wan@intel.com>