System layer needs initialization before network initialization

[andy31415]

Problem

InitNetwork() does not initialize the system layer.

Summary of Changes

Initialize the system layer in tests.

fixes #1345

[chip-bot]

Size increase report for "Build Examples [nRF]"

File	Section	File	VM
chip-nrf52840-lock-example.out	[LOAD #2 [RW]]	0	-4
chip-nrf52840-lock-example.out	.bss	0	-96
chip-nrf52840-lock-example.out	.text	-9676	-9676

Full report output

Bloat report for job 'Build Examples [nRF]'

Files found only in the baseline:
    bloat_report.txt

Comparing master_binaries/nrf-build/chip-nrf52840-lock-example.out and example_binaries/nrf-build/chip-nrf52840-lock-example.out:

sections,vmsize,filesize
[Unmapped],0,9677
[LOAD #2 [RW]],-4,0
.bss,-96,0
.debug_aranges,0,-608
.debug_ranges,0,-1792
.debug_frame,0,-1856
.symtab,0,-4832
.debug_macro,0,-5113
.debug_abbrev,0,-5187
.strtab,0,-6046
.debug_str,0,-6704
.text,-9676,-9676
.debug_line,0,-18719
.debug_loc,0,-19666
.debug_info,0,-49638

[chip-bot]

Size increase report for "Build Examples [ESP32]"

File	Section	File	VM
chip-wifi-echo.elf	.dram0.bss	0	-112
chip-wifi-echo.elf	.flash.rodata	-1936	-1936
chip-wifi-echo.elf	.flash.text	-13020	-13020

Full report output

Bloat report for job 'Build Examples [ESP32]'

Files found only in the baseline:
    bloat_report.txt

Comparing master_binaries/esp32-build/chip-wifi-echo.elf and example_binaries/esp32-build/chip-wifi-echo.elf:

sections,vmsize,filesize
.dram0.bss,-112,0
.xt.prop._ZNK4chip3Ble15BleEndPointPool3GetEi,0,-112
.xt.prop._ZNK4chip3Ble15BleEndPointPool7GetFreeEv,0,-124
.xt.prop._ZN4chip7SetFlagIhNS_3Ble9BtpEngineUt_EEEvRT_T0_b,0,-140
.xt.prop._ZN4chip3Ble15BleEndPointPool4FindEt,0,-148
.xt.prop._ZN4chip8Encoding5Read8ERPKh,0,-156
.xt.prop._ZN4chip7SetFlagIhNS_3Ble11BLEEndPoint20ConnectionStateFlagsEEEvRT_T0_b,0,-180
.debug_ranges,0,-784
.debug_aranges,0,-832
.flash.rodata,-1936,-1936
[33 Others],0,-2158
[Unmapped],0,-2166
.shstrtab,0,-2279
.debug_frame,0,-2332
.debug_str,0,-2571
.symtab,0,-2640
.debug_abbrev,0,-4089
.strtab,0,-6579
.flash.text,-13020,-13020
.debug_line,0,-18710
.debug_info,0,-41960

[chip-bot]

Size increase report for "Build Examples [main-build]"

File	Section	File	VM

Full report output

Bloat report for job 'Build Examples [main-build]'

Files found only in the baseline:
    bloat_report.txt

Comparing master_binaries/main-build/chip-standalone-demo.out and example_binaries/main-build/chip-standalone-demo.out:

sections,vmsize,filesize
.debug_line,0,1
[Unmapped],0,-3
.debug_info,0,-6