Debian: Modify kickstart to implement single OSTREE pull

This update implements kickstart changes required to install
controller nodes with a single network ostree_repo pull.

Test Plan: Verify single network pull for all

PASS: Verify AIO provisioning from a USB install
PASS: Verify AIO provisioning from a PXE install
PASS: Verify Standard 2+1 System provisioning from a USB install
PASS: Verify worker only install
PASS: Verify controller-1 install from controller-0 (5+)
PASS: Verify Standard controller-0 install from controller-1
PASS: Verify Standard worker install from controller-1

Story: 2009968
Task: 45932
Signed-off-by: Eric MacDonald <eric.macdonald@windriver.com>
Change-Id: I72684d65237c3596ef07a8fdcfc0555fc9e95a3e

kickstart/files/kickstart.cfg

@@ -1483,6 +1483,75 @@ udevadm settle --timeout=300 || report_failure_with_msg "udevadm settle failed"
 # Rescan LVM cache to avoid warnings for VGs that were recreated.
 pvscan --cache 2>/dev/null
 
+# Stage the ostree_repo in /sysroot for network installations
+# of controller nodes. Doing so avoids a double ostree pull of
+# the huge ostree_repo over the network.
+if is_usb_install -eq 0 ; then
+
+    ilog "USB Install"
+
+else
+
+    ilog "Network Install"
+
+    ##################################################################
+    #
+    # System node installs of worker and storage nodes are installed
+    # over the network rather than from a staged archive.
+    # This is because these node types do not have/need a local feed.
+    #
+    ##################################################################
+
+    if [ "${controller}" = true ] ; then
+
+        ilog "Controller Install"
+
+        ##############################################################
+        #
+        # Controller node network installs pull the ostree_repo from
+        # the pxeboot server's feed directory in 'archive' mode into
+        # /sysroot as a local staging location. In this case LAT's
+        # INSTL (install) variable is updated to install from that
+        # local stage.
+        #
+        # This is done to avoid a second (double) ostree_repo pull
+        # over the network that would otherwise be needed to populate
+        # the controller's feed directory.
+        #
+        # This staged ostree_repo archive is later moved to the
+        # controller's feed directory to be used for future installs
+        # of other system nodes from this controller.
+        #
+        ##############################################################
+
+        PHYS_SYSROOT="/sysroot"
+        OSTREE_ROOT_DEVICE="LABEL=otaroot"
+        mkdir -p ${PHYS_SYSROOT}
+        mount -o rw,noatime "${OSTREE_ROOT_DEVICE}" "${PHYS_SYSROOT}" || elog "Error mounting ${OSTREE_ROOT_DEVICE}"
+
+        repo="${PHYS_SYSROOT}/var/www/pages/feed/rel-xxxPLATFORM_RELEASExxx/ostree_repo"
+        mkdir -p "${repo}"
+
+        # Tell LAT to install friom this local stage
+        # i.e. override where LAT installs from.
+        export instl=${repo}
+        export INSTL=${instl}
+
+        ostree --repo=${repo} init --mode=archive
+        if [ "${insturl}" = "file://NOT_SET" ] ; then
+            ilog "ostree_repo archive pull from file:///instboot/ostree_repo"
+            ostree --repo=${repo} remote add ${instbr} file:///instboot/ostree_repo
+        else
+            ilog "ostree_repo archive pull from ${insturl}"
+            ostree --repo=${repo} remote add ${instbr} ${insturl}
+        fi
+
+        ostree --repo=${repo} pull --depth=-1 --mirror ${instbr}:${instbr}
+        umount ${PHYS_SYSROOT}
+
+    fi
+fi
+
 true
 %end
 
@@ -2087,14 +2156,16 @@ if [ "${controller}" = true ] ; then
     mkdir -p "${pxeboot}/rel-${sw_release}"
 
     if [ ${OSTREE_REPO_FETCHED} -eq 0 ] ; then
-        ilog "Pull ostree_repo to ${repo}"
+        if is_usb_install -eq 0 ; then
-        ostree --repo=${repo} init --mode=archive
+
-        if [ "${insturl}" = "file://NOT_SET" ] ; then
+            ilog "Stage ostree_repo from USB device to ${repo}"
+            ostree --repo=${repo} init --mode=archive
             ostree --repo=${repo} remote add ${instbr} file:///instboot/ostree_repo
+            ostree --repo=${repo} pull ${pull_options} ${instbr}:${instbr}
         else
-            ostree --repo=${repo} remote add ${instbr} ${insturl}
+            ilog "Stage ostree_repo from previous /sysroot pull to ${repo}"
+            mv -f /sysroot/var/www/pages/feed/rel-${sw_release}/ostree_repo ${IMAGE_ROOTFS}/var/www/pages/feed/rel-${sw_release}/
         fi
-        ostree --repo=${repo} pull ${pull_options} ${instbr}:${instbr}
 
         # This is used by patching.
         # Set ostree remote to the local install feed
@@ -2143,7 +2214,7 @@ if [ "${controller}" = true ] ; then
     # handle pxeboot install
     else
         pxeurl=$(echo $insturl | sed -e s/ostree_repo//)
-        ilog "Fetch bzImage and initrd files from ${pxeurl}/pxeboot to ${feed}/pxeboot and ${pxeboot}/rel-${sw_release}"
+        ilog "Fetch bzImage and initrd files from ${pxeurl}/pxeboot"
         pushd ${feed}/pxeboot > /dev/null
         for f in bzImage  bzImage-rt  bzImage-rt.sig  bzImage.sig  bzImage-std  bzImage-std.sig initrd initrd.sig; do
             if [ ! -e "./${f}" ] ; then