Failed to use DNS name for communication

[Jeffwan]

I am using LMCache + Infinistore to do some benchmark testing on Kubernetes. Here's my connection string.

 remote_url: "infinistore://infinistore-svc:12345"

1. Seems DNS name is not parsed.
2. I switched to pod ip and service cluster ip which works fine

Using DNS name is much easier for this case, let's add the support for it

[thesues]

fixed in #176