Modify `canary.IsPrimaryReady()` and `canary.Initialize()` to return a
boolean indicating if the error is retriable. Modify the scheduler to
rollback the analysis and mark the Canary object as failed if the above
two functions or `canary.IsCanaryRead()` returns false along with an
error.
Signed-off-by: Sanskar Jaiswal <jaiswalsanskar078@gmail.com>