getProtocolParams use CNCLI if ENABLE_KOIOS=N

[TrevorBenson]

Description

Disables KOIOS access from getProtocolParams if ENABLE_KOIOS is set to N.

Motivation and context

Found unexpected KOIOS API access when trying to completely disable KOIOS. I had set both ENABLE_KOIOS and USE_KOIOS_API to N, but still found cases where traffic was hitting KOIOS endpoints.

Which issue it fixes?

Closes #1807

How has this been tested?

From inside a container using bash -x and capturing stderr to stdout and confirming the curl to cli_protocol_params API route no longer occurs when cncli.sh leaderlog is executed. Also using tcpdump to just examine traffic destined for the IP address of guild.koios.rest.

[TrevorBenson]

@rdlrt @Scitz0
Should this PR include conditional logic to also check if USE_KOIOS_API is set to N and also fallback to cardano-cli for protocol params?

• cncli.sh ignores ENABLE_KOIOS in favor of checking USE_KOIOS_API environment variables.
• cntools.sh does not consider either environment variable.
  • I could not get cntools.sh to cause this behavior of calling koios API's via updateProtocolParams function after a couple of tries of jumping between menus in cntools, even though it appeared to be part of the main loop.

[Scitz0]

👍