uint16.random unknown symbol

[prpr2770]

While compiling tcp_test.ivy from the networking branch, I obtained the following error

# ivyc target=test tcp_test.ivy
tcp_test.ivy: line 232: error: unknown symbol: uint16.random

I believe I have installed Ivy from the main-branch.

[kenmcmil]

I think that feature is not yet merged into master.