NDNts-aux snapshot v1.1

[CAWorks-ChrisA]

Hotfixes on the following issues:

1. Correcting a minor error on snapshot generation so it adheres to the configurable "snapshot topic" specified via the constructor in ndn-svs-adaptor
2. Extend the interval's configuration capabilities from the ndn-svs-adaptor constructor to the workspace.create()'s opts.
3. Default snapshot interval changed from 10 to 100.

PS: Sorry for the mess of the long chain of commits.. I think after this I should be able to remove commits within my fork.

[zjkmxy]

PS: Sorry for the mess of the long chain of commits..

Not a big issue for me, but I need to use squash merge in this case, which means only your final version will be accepted in the mainstream as a single commit.
If you need your history (likely not), you need to keep a separate branch on your repo.