* Added NodePort service support for redis operator

Signed-off-by: iamabhishek-dubey <abhishekbhardwaj510@gmail.com>

* Added nodePort service support

Signed-off-by: iamabhishek-dubey <abhishekbhardwaj510@gmail.com>

* Updated CHANGELOG with v0.4.0 info

Signed-off-by: iamabhishek-dubey <abhishekbhardwaj510@gmail.com>