birdcage: port simple specs tests to scalatest
birdcage: port simple specs tests to scalatest

Specs has been abandoned for 3 years.  This commit is the result of
running script to port many simple tests to Scalatest.

RB_ID=521145
TBR=true

OopsOutOfMemory/finagle,mosesn/finagle,kumasento/finagle,folone/finagle,scorpiovn/finagle,BuoyantIO/finagle,nomadlabs/finagle,luciferous/finagle,svetlyak40wt/finagle,almendar/finagle,a-manumohan/finagle,suls/finagle,a-manumohan/finagle,liamstewart/finagle,rodrigodealer/finagle,koshelev/finagle,bruceluo/finagle,almendar/finagle,mosesn/finagle,latur19318/finagle,jpederzolli/finagle,travisbrown/finagle,kingtang/finagle,fengshao0907/finagle,latur19318/finagle,adriancole/finagle,rjbhewei/finagle,kingtang/finagle,latur19318/finagle,mosesn/finagle,lysu/finagle,sveinnfannar/finagle,zfy0701/finagle,jay-johnson/finagle,lukiano/finagle,spockz/finagle,mkhq/finagle,scorpiovn/finagle,scorpiovn/finagle,zfy0701/finagle,adriancole/finagle,jeremyrsmith/finagle,koshelev/finagle,BuoyantIO/finagle,chen0031/finagle,mkhq/finagle,fengshao0907/finagle,almendar/finagle,kingtang/finagle,OopsOutOfMemory/finagle,jeremyrsmith/finagle,OopsOutOfMemory/finagle,twitter/finagle,kumasento/finagle,liamstewart/finagle,zfy0701/finagle,svetlyak40wt/finagle,chen0031/finagle,jeremyrsmith/finagle,adriancole/finagle,thirstycrow/finagle,scorpiovn/finagle,kumasento/finagle,scorpiovn/finagle,Krasnyanskiy/finagle,travisbrown/finagle,thirstycrow/finagle,cogitate/twitter-finagle-uuid,rjbhewei/finagle,sveinnfannar/finagle,cogitate/twitter-finagle-uuid,liamstewart/finagle,lukiano/finagle,chen0031/finagle,lukiano/finagle,lucaslanger/finagle,liamstewart/finagle,Krasnyanskiy/finagle,nkhuyu/finagle,thirstycrow/finagle,rjbhewei/finagle,jay-johnson/finagle,fengshao0907/finagle,twitter/finagle,spockz/finagle,lucaslanger/finagle,suls/finagle,nkhuyu/finagle,kingtang/finagle,mkhq/finagle,spockz/finagle,nomadlabs/finagle,koshelev/finagle,BuoyantIO/finagle,luciferous/finagle,rodrigodealer/finagle,folone/finagle,rodrigodealer/finagle,koshelev/finagle,OopsOutOfMemory/finagle,adriancole/finagle,sveinnfannar/finagle,lukiano/finagle,rojanu/finagle,fengshao0907/finagle,kumasento/finagle,svetlyak40wt/finagle,adriancole/finagle,spockz/finagle,liamstewart/finagle,travisbrown/finagle,folone/finagle,Krasnyanskiy/finagle,twitter/finagle,spockz/finagle,sveinnfannar/finagle,kingtang/finagle,suls/finagle,latur19318/finagle,BuoyantIO/finagle,a-manumohan/finagle,rojanu/finagle,mkhq/finagle,thirstycrow/finagle,adriancole/finagle,lucaslanger/finagle,lukiano/finagle,suls/finagle,cogitate/twitter-finagle-uuid,twitter/finagle,mosesn/finagle,kumasento/finagle,bruceluo/finagle,lysu/finagle,travisbrown/finagle,BuoyantIO/finagle,bruceluo/finagle,Krasnyanskiy/finagle,OopsOutOfMemory/finagle,jpederzolli/finagle,luciferous/finagle,latur19318/finagle,jpederzolli/finagle,luciferous/finagle,koshelev/finagle,jay-johnson/finagle,lucaslanger/finagle,nomadlabs/finagle,jpederzolli/finagle,bruceluo/finagle,jeremyrsmith/finagle,lysu/finagle,koshelev/finagle,jay-johnson/finagle,almendar/finagle,chen0031/finagle,sveinnfannar/finagle,thirstycrow/finagle,twitter/finagle,rojanu/finagle,rojanu/finagle,nkhuyu/finagle,luciferous/finagle,BuoyantIO/finagle,lysu/finagle,luciferous/finagle,zfy0701/finagle,a-manumohan/finagle,lucaslanger/finagle,chen0031/finagle,travisbrown/finagle,spockz/finagle,rojanu/finagle,mkhq/finagle,rjbhewei/finagle,lysu/finagle,svetlyak40wt/finagle,rodrigodealer/finagle,nomadlabs/finagle,sveinnfannar/finagle,bruceluo/finagle,svetlyak40wt/finagle,Krasnyanskiy/finagle,jpederzolli/finagle,mkhq/finagle,cogitate/twitter-finagle-uuid,folone/finagle,nomadlabs/finagle,jay-johnson/finagle,almendar/finagle,lukiano/finagle,jeremyrsmith/finagle,nkhuyu/finagle,cogitate/twitter-finagle-uuid,suls/finagle,rodrigodealer/finagle,nkhuyu/finagle,zfy0701/finagle,mosesn/finagle,fengshao0907/finagle,folone/finagle,rjbhewei/finagle,a-manumohan/finagle