Problem: Ever-changing genesis fingerprint

[lezzokafka]

Background:
CRYPTO_GENESIS_FINGERPRINT is one of the environment variable required by the client-*.

The issue:
It changes whenever we modify the genesis.json. Hard-coding it in the Devnet Pre-requisites might not be ideal.

Potential solutions:

• In the last Makefile update by @allthatjazzleo, It is now directly calculated by the dev-utils (ask the user to use the dev-utils);
• Have an updated genesis fingerprint somewhere in the chain repo and point to there;
• (not suggested) Just let it run and wait for the error message
  genesis fingerprint from tendermint xx...xx is not match setted genesis fingerprint yy...yy then use the yy...yy as the genesis fingerprint.