Move proxy into pkg

Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)

proxy/stub_proxy.go

@@ -0,0 +1,22 @@
+package proxy
+
+import (
+	"net"
+)
+
+type StubProxy struct {
+	frontendAddr net.Addr
+	backendAddr  net.Addr
+}
+
+func (p *StubProxy) Run()                   {}
+func (p *StubProxy) Close()                 {}
+func (p *StubProxy) FrontendAddr() net.Addr { return p.frontendAddr }
+func (p *StubProxy) BackendAddr() net.Addr  { return p.backendAddr }
+
+func NewStubProxy(frontendAddr, backendAddr net.Addr) (Proxy, error) {
+	return &StubProxy{
+		frontendAddr: frontendAddr,
+		backendAddr:  backendAddr,
+	}, nil
+}