Address Review Comments of using pyhton based config load_minigraph/

config save/config reload from shell scripts so that we don't duplicate
code. Also while running from shell we will skip stop/start services
done by those commands.

files/image_config/config-setup/config-setup

@@ -103,117 +103,19 @@ run_hookdir() {
     return $exit_status
 }
 
-initalize_configdb()
-{
-    NAMESPACE_ARGUMENT=''
-    IP_NETNS_CMD=''
-    # Create correct argument based on per-asic name space in multi-npu platforms
-    if [[ $# -eq 2 ]]; then
-        NAMESPACE_ARGUMENT=${NAMESPACE_OPTION}${NAMESPACE_PREFIX}$2
-        IP_NETNS_CMD=${IP_NETNS_CMD_PREFIX}${NAMESPACE_PREFIX}$2
-    fi 
-
-    if [[ "$1" == "init" ]]; then
-        # case when config db need to be created/initialized from minigraph
-        sonic-db-cli ${NAMESPACE_ARGUMENT} CONFIG_DB FLUSHDB
-        sonic-cfggen -H -m -j ${INIT_CFG_JSON} ${NAMESPACE_ARGUMENT} --write-to-db
-        sonic-db-cli ${NAMESPACE_ARGUMENT} CONFIG_DB SET "CONFIG_DB_INITIALIZED" "1"
-        sonic-cfggen ${NAMESPACE_ARGUMENT} -d --print-data > ${CONFIG_DB_PATH}${CONFIG_DB_PREFIX}$2${CONFIG_DB_SUFFIX}
-        if [[ ($NUM_ASIC -gt 1) && ($# -eq 1) ]]; then
-            return 0
-        fi
-        # this will be run only in per-asic namespace only in multi-npu platforms
-        ${IP_NETNS_CMD} config qos reload
-        ${IP_NETNS_CMD} pfcwd start_default
-    elif [[ "$1" == "reload" ]]; then
-        # case when config db is already present from previous image file system
-        sonic-cfggen ${NAMESPACE_ARGUMENT} -j ${CONFIG_DB_PATH}${CONFIG_DB_PREFIX}$2${CONFIG_DB_SUFFIX} --write-to-db
-    fi
-
-    return 0
-}
-configdb_migrator()
-{
-    NAMESPACE_ARGUMENT=''
-    # Create correct argument based on per-asic name space in multi-npu platforms
-    if [[ $# -eq 2 ]]; then
-        NAMESPACE_ARGUMENT=${NAMESPACE_OPTION}${NAMESPACE_PREFIX}$2
-    fi 
-
-    if [[ "$1" == "init" ]]; then
-        # case when config db created/initialized from minigraph need to be migrated
-        if [[ -x /usr/bin/db_migrator.py ]]; then
-            # Set latest version number
-            /usr/bin/db_migrator.py ${NAMESPACE_ARGUMENT} -o set_version
-        fi
-    elif [[ "$1" == "reload" ]]; then
-        # case when config db is already present from previous image file system
-        # need to be migrated
-        if [[ -x /usr/bin/db_migrator.py ]]; then
-            # Migrate the DB to the latest schema version if needed
-            /usr/bin/db_migrator.py ${NAMESPACE_ARGUMENT} -o migrate
-        fi
-    fi
-}
-
 # Reload minigraph.xml file on disk
 reload_minigraph()
 {
     echo "Reloading minigraph..."
-    if [ ! -f /etc/sonic/init_cfg.json ]; then
-        echo "{}" > /etc/sonic/init_cfg.json
-    fi
-
-    # Initialize config db for single-npu platform and global config db for multi-npu
-    # platforms
-    initalize_configdb init
-    asic_num=0
-    while [[ ($asic_num -lt $NUM_ASIC) && ($NUM_ASIC -gt 1) ]]; do
-        # Intiialize per asic/namespace config db
-        initalize_configdb init $asic_num
-        ((asic_num = asic_num + 1))
-    done   
-    if [[ -f /etc/sonic/acl.json ]]; then
-        # For acl the acl-loader command takes care for multi-npu platforms
-        acl-loader update full /etc/sonic/acl.json
-    fi
-
-    # Initialize config db migrator for single-npu platform and global config db for multi-npu
-    # platforms
-    configdb_migrator init
-    asic_num=0
-    while [[ ($asic_num -lt $NUM_ASIC) && ($NUM_ASIC -gt 1) ]]; do
-        # Initialize config db migrator for per-asic namespace config db
-        # in multi-npu platforms
-        configdb_migrator init $asic_num
-        ((asic_num = asic_num + 1))
-    done   
+    config load_minigraph -y -n 
+    config save -y
 }
 
 # Reload exisitng config db file on disk
 reload_configdb()
 {
     echo "Reloading existing config db..."
-    # Reload existing config db for single-npu platform and global config db for multi-npu
-    # platforms
-    initalize_configdb reload
-    asic_num=0
-    while [[ ($asic_num -lt $NUM_ASIC) && ($NUM_ASIC -gt 1) ]]; do
-        # Reload exisitng per asic/namespace config db
-        initalize_configdb reload $asic_num
-        ((asic_num = asic_num + 1))
-    done
-
-    # Initialize existing config db migrator for single-npu platform and global config db for multi-npu
-    # platforms
-    configdb_migrator reload
-    asic_num=0
-    while [[ ($asic_num -lt $NUM_ASIC) && ($NUM_ASIC -gt 1) ]]; do
-        # Initialize existing config db migrator for single-npu platform and global config db for multi-npu
-        # platforms
-        configdb_migrator reload $asic_num
-        ((asic_num = asic_num + 1))
-    done   
+    config reload -y -n
 }
 # Restore SONiC configuration from a backup copy
 function copy_config_files_and_directories()
@@ -509,9 +411,6 @@ if [[ -f "$ASIC_CONF" ]]; then
     source $ASIC_CONF
 fi
 
-NAMESPACE_OPTION='-n '
-NAMESPACE_PREFIX='asic'
-IP_NETNS_CMD_PREFIX='sudo ip netns exec '
 
 CMD=$1
 # Default command is boot