Update testcontainers to use parity 2.1.3 across the board

[D4nte]

testcontainers was updated to default to parity 2.1.3 and bitcoind 0.17.0.
Updating comit-rs to use latest testcontainers version.

[D4nte]

Blocked as team wants to do testcontainers/testcontainers-rs#46 first

[D4nte]

Blocked on publishing new version of tc_parity_parity crate to crates.io

[thomaseizinger]

I think we could just remove the whole cargo-make task and let the images download on-demand? Feels bad to maintain things like that in two different places.

[bonomat]

I think we could just remove the whole cargo-make task and let the images download on-demand? Feels bad to maintain things like that in two different places.

Good point. However, this will have the effect that tests will run arbitrarily long sometimes as an image might be downloaded.

[D4nte]

@bonomat the image would be downloaded in any case and we currently do not look at single test performance.
What is good in downloading the images at the beginning is to fail fast in case of outage of docker.io (which do happen).

[thomaseizinger]

But is that enough to justify the duplication? I am not sure.

[D4nte]

Didn't you add it in the first place @thomaseizinger ? :)

[thomaseizinger]

I did but I am starting to regret it as it seems to be a maintenance burden to keep it in sync with what is actually used.