ctr: move pprof to commands package

Signed-off-by: Jess Valarezo <valarezo.jessica@gmail.com>

cmd/ctr/commands/pprof/pprof_unix.go

@@ -0,0 +1,13 @@
+// +build !windows
+
+package pprof
+
+import "net"
+
+func (d *pprofDialer) pprofDial(proto, addr string) (conn net.Conn, err error) {
+	return net.Dial(d.proto, d.addr)
+}
+
+func getPProfDialer(addr string) *pprofDialer {
+	return &pprofDialer{"unix", addr}
+}