change to non-static cache in carrierSignalAgent

     * This is a map of intent action -> string array of carrier signal receiver names which are

     * interested in this intent action

     */

    private static final HashMap<String, String[]> mCachedCarrierSignalReceiverNames =

    private final HashMap<String, String[]> mCachedCarrierSignalReceiverNames =

            new HashMap<>();

    /**

     * This is a map of intent action -> carrier config key of signal receiver names which are

     * interested in this intent action

     */

    private static final Map<String, String> mIntentToCarrierConfigKeyMap =

    private final Map<String, String> mIntentToCarrierConfigKeyMap =

            new HashMap<String, String>() {{

                put(TelephonyIntents.ACTION_CARRIER_SIGNAL_REDIRECTED,

                        CarrierConfigManager.KEY_SIGNAL_REDIRECTION_RECEIVER_STRING_ARRAY);

                        Rlog.d("loadCarrierSignalReceiverNames: ", name);

                    }

                }

            } else {

                // Return static default defined in CarrierConfigManager.

                receiverNames = CarrierConfigManager.getDefaultConfig().getStringArray(receiverType);

            }

            mCachedCarrierSignalReceiverNames.put(intentAction, receiverNames);

        }