Add function to compute the absolute id of a dependency
Add function to compute the absolute id of a dependency

SubmitManyJobs also accepts jobs with dependencies given as
relative ids. Together with the absolute id of the job, once
assigned, the dependency can be resolved. Add a function doing
this computation.

Signed-off-by: Klaus Aehlig <4ce51de36d9068cd7db2eec1151e0f3f95419008@google.com>
Reviewed-by: Michele Tartara <05f7077a2c6cbbdc4af4ba42e3ef89a0df846179@google.com>

mbakke/ganeti,dimara/ganeti,onponomarev/ganeti,apyrgio/ganeti,dimara/ganeti,bitemyapp/ganeti,leshchevds/ganeti,mbakke/ganeti,yiannist/ganeti,leshchevds/ganeti,grnet/snf-ganeti,onponomarev/ganeti,ganeti-github-testing/ganeti-test-1,ganeti-github-testing/ganeti-test-1,apyrgio/ganeti,grnet/snf-ganeti,ganeti/ganeti,yiannist/ganeti,ganeti/ganeti,andir/ganeti,andir/ganeti,bitemyapp/ganeti,mbakke/ganeti,leshchevds/ganeti,ganeti/ganeti,andir/ganeti,yiannist/ganeti