release: Add the Ed25519 vagrant insecure key

Both insecure keys, RSA and Ed25519, are required.

Obtained from: https://github.com/hashicorp/vagrant/commit/b40f6e5fdae1113518e9c92f96dfcd364b646ff9
Reviewed by: imp
Pull Request: https://github.com/freebsd/freebsd-src/pull/835

release: Allow sudo -g anyone and sudo -u anyone -g anytwo

When only the user (ALL) is specified explicitly, and the group is
implied, only sudo -u works. Specifying both the user and group, like
(ALL:ALL), is required to:

1. Use sudo -g by itself (with no -u user)
2. Use sudo -u and -g together, with a -g group that is different from
the -u user's primary group

Obtained from: https://github.com/sudo-project/sudo/commit/1d13533ea3cda05ec666c45c6c533b614fdd97aa
Reviewed by: imp
Pull Request: https://github.com/freebsd/freebsd-src/pull/835

Remove $FreeBSD$: one-line sh pattern

Remove /^\s*#[#!]?\s*\$FreeBSD\$.*$\n/

release: allow VM_EXTRA_PACKAGES to be specified in the environment

This is useful for adding extra packages to the build of an AMI.
For example:
env VM_EXTRA_PACKAGES="zsh" make -C release ec2ami

Approved by: gjb
MFC after: 1 week
Sponsored by: Rubicon Communications, LLC ("Netgate")

release: fix VMSIZE following 1ca8842f3ad9

truncate(1) is not case-sensitive with regard to setting the size
of a file. makefs(8), however, does not honor upper-case values.
Update release-specific files and the release(7) manual page to
reflect this.

MFC with: 1ca8842f3ad9
Submitted by: ehem_freebsd_m5p.com (original)
Differential Review: https://reviews.freebsd.org/D28979
Sponsored by: Rubicon Communications, LLC ("Netgate")

Include the shells/bash port on Vagrant images, which prevents
a shell issue during startup.

PR: 245051
MFC after: 1 minute (if approved by re@)
X-MFC-for: 11.4-RC2
Sponsored by: Rubicon Communications, LLC (netgate.com)

Increase the size of the Vagrant default image size, as the 3GB
size is too small to bootstrap the firstboot_pkgs list.

While here, add the growfs(8) startup script to /etc/rc.conf,
as Vagrant images can be resized by modifying the Vagrantfile.

Reported by: dbaio
PR: 238226
MFC after: 1 week
Sponsored by: The FreeBSD Foundation

Fix an out-of-order execution issue regarding pkg(8):
- pkg(8) cannot be removed before subsequent reinvocations
- The PKG_CACHEDIR cannot be cleaned after the repo*.sqlite
has been removed
- pkg(8) cannot be removed as a precursor to any of the other
steps involved here

MFC after: 3 days
X-MFC-With: r285722
X-MFC-Before: 10.2-{BETA3,RC1} (whichever happens next)
Sponsored by: The FreeBSD Foundation

Add support for building VirtualBox Vagrant images.
Abstract the build, package and upload to handle building either type.

Approved by: re (gjb)

Add initial support for building Vagrant images for VMWare. Next steps will be adding Virtualbox support and uploading to Hashicorp Atlas for others to consume.

Approved by: re (gjb)