Remove an assertion that was being hit due to slow DNS name lookups on MacOSX for "localhost". 

Changed all "localhost" to "127.0.0.1" to prevent potentially long name lookups.

<rdar://problem/16154630>



git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@202424 91177308-0d34-0410-b5e6-96231b3b80d8