Support Stratis provhdr

[zeptin]

Also tweaked some altcoin tests to allow them to pass more consistently on multiple networks.

[NicolasDorier]

please don't edit that

[zeptin]

The original method still exists below. It merely calls the two new methods that split out the network set and node data into two reusable methods (e.g. note that some of the altcoin tests need to know which network they are running against, for some reason)

[NicolasDorier]

There is no point in doing that, now we need to modify 2 distinct places when 99% of the time we just want to uncomment 1 line.

[zeptin]

Can you suggest an improved way of determining which network set is in effect in the tests? It is necessary to inhibit certain tests from running when they are not running against the intended network (e.g. Liquid). If this is not done, at least one spurious test failure results across all other networks, which feels sloppy.

[NicolasDorier]

It does not build on appveyor.

[zeptin]

It does not build on appveyor.

It seems like this would only happen if NOSOCKET is set on appveyor, which would render any of the tests involving the protocol inoperative. That would appear to defeat the point of having the tests?

[NicolasDorier]

then surround the test with NOSOCKET