Replace the GSCC board on the OSN 7500

The NE configuration information is stored on the GSCC board. After the service boards are reset or started, the configuration information needs to be queried from the GSCC board. As a result, the configuration information cannot be queried, and services cannot run normally. When only one GSCC board is installed, replacing the GSCC board normally does not affect the running services. However, if the board is powered off or reset, services on the board are interrupted. When only two GSCCs are installed, replacing the standby GSCC does not affect the current services. If the active and standby GSCC versions are the same, the standby GSCC automatically synchronizes configuration data from the active GSCC.