[bug]: lntest hangs when attempting to create a 7th LND node

[ffranr]

The method lntest.HarnessTest.NewNode facilitates the creation of up to six new LND nodes seamlessly. Yet, initiating a seventh node induces a system hang. Theoretical limits on node instantiation within an itest should be solely governed by available RAM constraints.

Steps to reproduce

Reproduced here: #8578

[yyforyongyu]

This is because the --rpcmaxwebsockets setting, more details here.

[ffranr]

This is because the --rpcmaxwebsockets setting, more details here.

Thanks @yyforyongyu . Is there any ongoing work to fix this issue (or allow greater flexibility)?

[Roasbeef]

I think we can just increase the value in our deployment.