Moderate: systemd security, bug fix, and enhancement update (Oracle Linux 8)

[239-45.0.1]
- backport upstream pstore tmpfiles patch [Orabug: 31420486]
- udev rules: fix memory hot add and remove [Orabug: 31310273]
- fix to enable systemd-pstore.service [Orabug: 30951066]
- journal: change support URL shown in the catalog entries [Orabug: 30853009]
- fix to generate systemd-pstore.service file [Orabug: 30230056]
- fix _netdev is missing for iscsi entry in /etc/fstab (tony.l.lam@oracle.com) [Orabug: 25897792]
- set 'RemoveIPC=no' in logind.conf as default for OL7.2 [Orabug: 22224874]
- allow dm remove ioctl to co-operate with UEK3 (Vaughan Cao) [Orabug: 18467469]
- add hv dynamic memory support (Jerry Snitselaar) [Orabug: 18621475]
- Backport upstream patches for the new systemd-pstore tool (Eric DeVolder) [OraBug: 30230056]

[239-45]
- Revert 'test: add test cases for empty string match' and 'test: add test case for multi matches when use ||' (#1931947)
- test/sys-script.py: add missing DEVNAME entries to uevents (#1931947)
- sd-event: split out helper functions for reshuffling prioqs (#1819868)
- sd-event: split out enable and disable codepaths from sd_event_source_set_enabled() (#1819868)
- sd-event: mention that two debug logged events are ignored (#1819868)
- sd-event: split clock data allocation out of sd_event_add_time() (#1819868)
- sd-event: split out code to add/remove timer event sources to earliest/latest prioq (#1819868)
- sd-event: fix delays assert brain-o (#17790) (#1819868)
- sd-event: lets suffix last_run/last_log with '_usec' (#1819868)
- sd-event: refuse running default event loops in any other thread than the one they are default for (#1819868)
- sd-event: ref event loop while in sd_event_prepare() ot sd_event_run() (#1819868)
- sd-event: follow coding style with naming return parameter (#1819868)
- sd-event: remove earliest_index/latest_index into common part of event source objects (#1819868)
- sd-event: update state at the end in event_source_enable (#1819868)
- sd-event: increase n_enabled_child_sources just once (#1819868)
- sd-event: add ability to ratelimit event sources (#1819868)
- test: add ratelimiting test (#1819868)
- core: prevent excessive /proc/self/mountinfo parsing (#1819868)
- udev: run link_update() with increased retry count in second invocation (#1931947)
- pam-systemd: use secure_getenv() rather than getenv() (#1687514)

[239-44]
- ci: PowerTools repo was renamed to powertools in RHEL 8.3 (#1871827)
- ci: use quay.io instead of Docker Hub to avoid rate limits (#1871827)
- ci: move jobs from Travis CI to GH Actions (#1871827)
- unit: make UNIT() cast function deal with NULL pointers (#1871827)
- use link to RHEL-8 docs (#1623116)
- cgroup: Also set blkio.bfq.weight (#1657810)
- units: make sure initrd-cleanup.service terminates before switching to rootfs (#1657810)
- core: reload SELinux label cache on daemon-reload (#1888912)
- selinux: introduce mac_selinux_create_file_prepare_at() (#1888912)
- selinux: add trigger for policy reload to refresh internal selabel cache (#1888912)
- udev/net_id: give RHEL-8.4 naming scheme a name (#1827462)
- basic/stat-util: make mtime check stricter and use entire timestamp (#1642728)
- udev: make algorithm that selects highest priority devlink less susceptible to race conditions (#1642728)
- test: create /dev/null in test-udev.pl (#1642728)
- test: missing 'die' (#1642728)
- udev-test: remove a check for whether the test is run in a container (#1642728)
- udev-test: skip the test only if it cant setup its environment (#1642728)
- udev-test: fix test skip condition (#1642728)
- udev-test: fix missing directory test/run (#1642728)
- udev-test: check if permitted to create block device nodes (#1642728)
- test-udev: add a testcase of too long line (#1642728)
- test-udev: use proper semantics for too long line with continuation (#1642728)
- test-udev: add more tests for line continuations and comments (#1642728)
- test-udev: add more tests for line continuation (#1642728)
- test-udev: fix alignment and drop unnecessary white spaces (#1642728)
- test/udev-test.pl: cleanup if skipping test (#1642728)
- test: add test cases for empty string match (#1642728)
- test: add test case for multi matches when use '||' (#1642728)
- udev-test: do not rely on 'mail' group being defined (#1642728)
- test/udev-test.pl: allow multiple devices per test (#1642728)
- test/udev-test.pl: create rules only once (#1642728)
- test/udev-test.pl: allow concurrent additions and removals (#1642728)
- test/udev-test.pl: use computed devnode name (#1642728)
- test/udev-test.pl: test correctness of symlink targets (#1642728)
- test/udev-test.pl: allow checking multiple symlinks (#1642728)
- test/udev-test.pl: fix wrong test descriptions (#1642728)
- test/udev-test.pl: last_rule is unsupported (#1642728)
- test/udev-test.pl: Make some tests a little harder (#1642728)
- test/udev-test.pl: remove bogus rules from magic subsys test (#1642728)
- test/udev-test.pl: merge 'space and var with space' tests (#1642728)
- test/udev-test.pl: merge import parent tests into one (#1642728)
- test/udev-test.pl: count 'good' results (#1642728)
- tests/udev-test.pl: add multiple device test (#1642728)
- test/udev-test.pl: add repeat count (#1642728)
- test/udev-test.pl: generator for large list of block devices (#1642728)
- test/udev-test.pl: suppress umount error message at startup (#1642728)
- test/udev_test.pl: add 'expected good' count (#1642728)
- test/udev-test: gracefully exit when imports fail (#1642728)

[239-43]
- man: mention System Administrators Guide in systemctl manpage (#1623116)
- udev: introduce udev net_id 'naming schemes' (#1827462)
- meson: make net.naming-scheme= default configurable (#1827462)
- man: describe naming schemes in a new man page (#1827462)
- udev/net_id: parse _SUN ACPI index as a signed integer (#1827462)
- udev/net_id: dont generate slot based names if multiple devices might claim the same slot (#1827462)
- fix typo in ProtectSystem= option (#1871139)
- remove references of non-existent man pages (#1876807