Merge pull request #5452 from mheon/release_notes_181

[CI:DOCS] Update release notes for v1.8.1 final release

RELEASE_NOTES.md

@@ -9,6 +9,7 @@
 - While the HTTP API remains in alpha, many fixes and additions have landed. These are documented in a separate subsection below
 - The `podman create` and `podman run` commands now feature a `--no-healthcheck` flag to disable healthchecks for a container ([#5299](https://github.com/containers/libpod/issues/5299))
 - Containers now recognize the `io.containers.capabilities` label, which specifies a list of capabilities required by the image to run. These capabilities will be used as long as they are more restrictive than the default capabilities used
+- YAML produced by the `podman generate kube` command now includes SELinux configuration passed into the container via `--security-opt label=...` ([#4950](https://github.com/containers/libpod/issues/4950))
 
 ### Bugfixes
 - Fixed CVE-2020-1726, a security issue where volumes manually populated before first being mounted into a container could have those contents overwritten on first being mounted into a container
@@ -37,6 +38,7 @@
 - Fixed a bug where the `podman port` command was incorrectly interpreting additional arguments as container names, instead of port numbers
 - Fixed a bug where units created by `podman generate systemd` did not depend on network targets, and so could start before the system network was ready ([#4130](https://github.com/containers/libpod/issues/4130))
 - Fixed a bug where exec sessions in containers which did not specify a user would not inherit supplemental groups added to the container via `--group-add`
+- Fixed a bug where Podman would not respect the `$TMPDIR` environment variable for placing large temporary files during some operations (e.g. `podman pull`) ([#5411](https://github.com/containers/libpod/issues/5411))
 
 ### HTTP API
 - Initial support for secure connections to servers via SSH tunneling has been added
@@ -52,7 +54,7 @@
 
 ### Misc
 - Updated vendored Buildah to v1.14.2
-- Updated vendored containers/storage to v1.16.0
+- Updated vendored containers/storage to v1.16.2
 - The `Created` field to `podman images --format=json` has been renamed to `CreatedSince` as part of the fix for ([#5110](https://github.com/containers/libpod/issues/5110)). Go templates using the old name should still work
 - The `CreatedTime` field to `podman images --format=json` has been renamed to `CreatedAt` as part of the fix for ([#5110](https://github.com/containers/libpod/issues/5110)). Go templates using the old name should still work
 - The `before` filter to `podman images` has been renamed to `since` for Docker compatibility. Using `before` will still work, but documentation has been changed to use the new `since` filter