mkosi: Move TEST-24-CRYPTSETUP files to mkosi/ directory

If the integration tests have been installed in the systemd-tests
package, the path to these in mkosi.postinst.chroot will be wrong.
Let's fix the issue by moving these files into the mkosi/ directory
as they're only used by mkosi regardless so they make more sense to
be there anyway.

test/integration-tests/TEST-24-CRYPTSETUP/keydev.repart/00-root.conf

@@ -1,9 +0,0 @@
-# SPDX-License-Identifier: LGPL-2.1-or-later
-
-[Partition]
-Type=linux-generic
-UUID=0fc63daf-8483-4772-8e79-3d69d8477de4
-Label=varcrypt_keydev
-SizeMinBytes=16M
-Format=ext4
-CopyFiles=/keyfile:/keyfile

test/integration-tests/TEST-24-CRYPTSETUP/keyfile

@@ -1 +0,0 @@
-test

test/integration-tests/TEST-24-CRYPTSETUP/meson.build

@@ -4,7 +4,6 @@ integration_tests += [
         integration_test_template + {
                 'name' : fs.name(meson.current_source_dir()),
                 'credentials' : integration_test_template['credentials'] + [
-                        files('keyfile'),
                         'fstab.extra="/dev/mapper/test24_varcrypt /var ext4 defaults 0 1"',
                 ],
                 'cmdline' : [

test/integration-tests/TEST-24-CRYPTSETUP/template.cfg

@@ -1,8 +0,0 @@
-dn = "cn = systemd"
-expiration_days = 30
-
-signing_key
-encryption_key
-
-tls_www_client
-email_protection_key