Don't delete v7+, it's needed for RpiZero2W

Don't delete v7+ modules, needed for Raspberry Pi Zero 2 W.
Add sntp, and use it to set the time before setup, to avoid problems
with certs being invalid.
Update for default cmdline changes.

pi-gen-sources/00-teslausb-tweaks/00-packages

@@ -9,3 +9,4 @@ fcgiwrap
 libnginx-mod-http-fancyindex
 libfuse-dev
 exfatprogs
+sntp

pi-gen-sources/00-teslausb-tweaks/00-patches/01-cmdline-update.diff

@@ -1,5 +1,5 @@
 --- stage_teslausb/rootfs/boot/cmdline.txt
 +++ stage_teslausb/rootfs/boot/cmdline.txt
 @@ -1 +1 @@
--console=serial0,115200 console=tty1 root=ROOTDEV rootfstype=ext4 elevator=deadline fsck.repair=yes rootwait quiet init=/usr/lib/raspi-config/init_resize.sh
-+dwc_otg.lpm_enable=0 console=serial0,115200 console=tty1 root=ROOTDEV rootfstype=ext4 elevator=deadline fsck.repair=yes rootwait modules-load=dwc2,g_ether quiet
+-console=serial0,115200 console=tty1 root=ROOTDEV rootfstype=ext4 fsck.repair=yes rootwait quiet init=/usr/lib/raspi-config/init_resize.sh
++dwc_otg.lpm_enable=0 console=serial0,115200 console=tty1 root=ROOTDEV rootfstype=ext4 fsck.repair=yes rootwait modules-load=dwc2,g_ether quiet

pi-gen-sources/00-teslausb-tweaks/00-run.sh

@@ -13,7 +13,6 @@ EOF
 
 on_chroot << EOF
 apt-get remove -y --force-yes --purge triggerhappy bluez alsa-utils
-rm -rf /lib/modules/*-v7+
 rm -rf /lib/modules/*-v8+
 EOF
 

pi-gen-sources/00-teslausb-tweaks/files/rc.local

@@ -34,6 +34,7 @@ function get_script () {
   while ! curl -o "$local_path/$name" https://raw.githubusercontent.com/"$REPO"/teslausb/"$BRANCH"/"$remote_path"/"$name"
   do
     setup_progress "get_script failed, retrying"
+    sntp -S time.google.com || true
     sleep 3
   done
   chmod +x "$local_path/$name"