scripts/rpc.py: move print_array to rpc.py

#!/usr/bin/env python

from rpc.client import print_dict, print_array

from rpc.client import print_dict

import argparse

import rpc

try:

    from shlex import quote

except ImportError:

    from pipes import quote

def print_array(a):

    print " ".join((quote(v) for v in a))

if __name__ == "__main__":

    parser = argparse.ArgumentParser(

        description='SPDK RPC command line interface')

import socket

import time

try:

    from shlex import quote

except ImportError:

    from pipes import quote

def print_dict(d):

    print json.dumps(d, indent=2)

def print_array(a):

    print " ".join((quote(v) for v in a))

class JSONRPCClient(object):

    def __init__(self, addr, port=None, verbose=False, timeout=60.0):

        self.verbose = verbose