Support interval-based and other analyzers in e2e regression tests

[Andrew7234]

Currently, the e2e_regression tests only support block-based analyzers. We'd like to support all analyzers, eg evmTokens and nodeStats. This will allow us to test more endpoints and more of the nexus functionality.

496 adds a cache_volatile_endpoints flag that should be useful. In addition, we'll need to find a way to terminate the non-block-based analyzers once the block-based analyzers have finished processing their range. This could be as simple as sending a SIGINT after a manually defined time period, or grepping the output logs.. etc