Fix nightly integration tests

[nguyer]

Previously we were passing the --blockchain-node flag for all integration tests. The ff init fabric subcommand does not support this flag though, so it fails to create the test stack.

Here is an example of a failed run where this happened: https://github.com/hyperledger/firefly/actions/runs/4189374980/jobs/7261623960#step:6:139

ff -v --ansi never init fabric --prometheus-enabled --database sqlite3 firefly_e2e 2 --blockchain-node fabric --token-providers erc20_erc721 --manifest ../../manifest.json --sandbox-enabled=false --multiparty=true
Error: unknown flag: --blockchain-node

[codecov-commenter]

Codecov Report

Merging #1190 (5734b68) into main (90b46b8) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##              main     #1190   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
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  Files          305       305           
  Lines        20057     20057           
=========================================
  Hits         20057     20057           

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