Server Bindaddr Args testcase correction

fix incorrect testcase for server bindaddr parsing. One example uses the "," character to separate argument sets which should (based on the spec) result in one long unsplit argument.

# (Previous)
"alpha:k1=v1,beta:k2=v2,gamma:k3=v3"  =>  "alpha": {"k1": ["v1,beta:k2=v2,gamma:k3=v3"] }

# (Updated)
"alpha:k1=v1;beta:k2=v2;gamma:k3=v3"  => "alpha": {"k1": ["v1"]}, "beta": {"k2": ["v2"]}, "gamma": {"k3": ["v3"] }