Change zstack start-up type in systemd
Change zstack start-up type in systemd

Old start-up type "simple" can't wait the start-up status
Use "notify" to expect the daemon sends a notification message
before exit systemd

Signed-off-by: Mei Lei <d1c6e4e75080176552ef8271b379adabccaa7551@gmail.com>

mrwangxc/zstack-utility,zstackorg/zstack-utility,mingjian2049/zstack-utility,live4thee/zstack-utility,zstackorg/zstack-utility,mingjian2049/zstack-utility,live4thee/zstack-utility,mrwangxc/zstack-utility,zstackio/zstack-utility,mingjian2049/zstack-utility,zstackio/zstack-utility,zstackorg/zstack-utility,mrwangxc/zstack-utility,live4thee/zstack-utility,zstackio/zstack-utility