Unmask and enable tmp.mount for overcloud-partition

In recent centos 8 images tmp.mount is masked, which causes issues
with all defined LVM mounts (/ is readonly, other mounts fail).

This change unmasks and enables tmp.mounted so the existing LVM /tmp
mounts correctly. It also makes fsck-passno compliant with the
documentation[1] so that / has value 1 and all other mounts are set to
2.

Blueprint: whole-disk-default
[1] https://www.man7.org/linux/man-pages/man5/fstab.5.html

Change-Id: Ib517e73845a7698f873a4f3207ffa9c54cdbcbef

elements/overcloud-partition-uefi/block-device-default.yaml

@@ -13,7 +13,7 @@
             mount_point: /boot/efi
             fstab:
               options: "defaults"
-              fsck-passno: 1
+              fsck-passno: 2
       - name: BSP
         type: 'EF02'
         size: 8MiB
@@ -86,7 +86,7 @@
         mount_point: /var/log
         fstab:
             options: "rw,relatime"
-            fsck-passno: 3
+            fsck-passno: 2
 - mkfs:
     name: fs_audit
     base: lv_audit
@@ -95,7 +95,7 @@
         mount_point: /var/log/audit
         fstab:
             options: "rw,relatime"
-            fsck-passno: 4
+            fsck-passno: 2
 - mkfs:
     name: fs_home
     base: lv_home

elements/overcloud-partition-uefi/post-install.d/98-enable-tmp-mount

@@ -0,0 +1,8 @@
+#!/bin/bash
+
+set -eux
+
+# Ensure tmp.mount isn't masked, which is done in cloud images
+# such as CentOS-Stream-GenericCloud-8
+systemctl unmask tmp.mount
+systemctl enable tmp.mount

elements/overcloud-partition/block-device-default.yaml

@@ -73,7 +73,7 @@
         mount_point: /var/log
         fstab:
             options: "rw,relatime"
-            fsck-passno: 3
+            fsck-passno: 2
 - mkfs:
     name: fs_audit
     base: lv_audit
@@ -82,7 +82,7 @@
         mount_point: /var/log/audit
         fstab:
             options: "rw,relatime"
-            fsck-passno: 4
+            fsck-passno: 2
 - mkfs:
     name: fs_home
     base: lv_home

elements/overcloud-partition/post-install.d/99-enable-tmp-mount

@@ -0,0 +1,8 @@
+#!/bin/bash
+
+set -eux
+
+# Ensure tmp.mount isn't masked, which is done in cloud images
+# such as CentOS-Stream-GenericCloud-8
+systemctl unmask tmp.mount
+systemctl enable tmp.mount