Extract send_limit, rcv_limit, rcv_warn_limit and send_warn_limit as int64

Extract send_limit, rcv_limit, rcv_warn_limit and send_warn_limit as int64

Description: smart-traffic-control library sends limits as int64 but manager
was extracting these values as uint64, due to which values were not extracted
and limits were not updated.

Below is the error log:-

D/STC_MANAGER(  386): stc-manager-gdbus.c: stc_manager_gdbus_dict_foreach(298) > Key : [rcv_limit]
D/STC_MANAGER(  386): stc-manager-gdbus.c: stc_manager_gdbus_dict_foreach(298) > Value: [int64 1024000]
D/STC_MANAGER(  386): stc-restriction.c: __stc_extract_restriction_rule(180) > Enter
D/STC_MANAGER(  386): stc-restriction.c: __stc_extract_restriction_rule(207) > rcv_limit: [0]
D/STC_MANAGER(  386): stc-restriction.c: __stc_extract_restriction_rule(235) > Quit
D/STC_MANAGER(  386): stc-manager-gdbus.c: stc_manager_gdbus_dict_foreach(298) > Key : [send_limit]
D/STC_MANAGER(  386): stc-manager-gdbus.c: stc_manager_gdbus_dict_foreach(298) > Value: [int64 1024000]
D/STC_MANAGER(  386): stc-restriction.c: __stc_extract_restriction_rule(180) > Enter
D/STC_MANAGER(  386): stc-restriction.c: __stc_extract_restriction_rule(211) > send_limit: [0]
D/STC_MANAGER(  386): stc-restriction.c: __stc_extract_restriction_rule(235) > Quit
D/STC_MANAGER(  386): stc-manager-gdbus.c: stc_manager_gdbus_dict_foreach(298) > Key : [rcv_warn_limit]
D/STC_MANAGER(  386): stc-manager-gdbus.c: stc_manager_gdbus_dict_foreach(298) > Value: [int64 1020000]
D/STC_MANAGER(  386): stc-restriction.c: __stc_extract_restriction_rule(180) > Enter
D/STC_MANAGER(  386): stc-restriction.c: __stc_extract_restriction_rule(215) > rcv_warn_limit: [0]
D/STC_MANAGER(  386): stc-restriction.c: __stc_extract_restriction_rule(235) > Quit
D/STC_MANAGER(  386): stc-manager-gdbus.c: stc_manager_gdbus_dict_foreach(298) > Key : [send_warn_limit]
D/STC_MANAGER(  386): stc-manager-gdbus.c: stc_manager_gdbus_dict_foreach(298) > Value: [int64 1020000]

Change-Id: I2e5ea475bc5545f631b7c74d208b2b1a27d41308
Signed-off-by: Nishant Chaprana <n.chaprana@samsung.com>