avoid that versions/2021.06/init is included in init tarball

[boegel]

This avoids that the versions/2021.06/init directory that was added in #246 gets included in the init tarball, which is not the intention:

$ tar tfvz eessi-2021.12-init-1684395250.tar.gz
drwxrwxr-x boegel/boegel 0 2023-05-18 09:34 2021.12/
drwxrwxr-x boegel/boegel 0 2023-05-18 09:27 2021.12/init/
-rw-rw-r-- boegel/boegel 3411 2023-05-18 09:27 2021.12/init/eessi_environment_variables
-rw-rw-r-- boegel/boegel  372 2023-05-18 09:27 2021.12/init/eessi_defaults
-rw-rw-r-- boegel/boegel 1257 2023-05-18 09:27 2021.12/init/bash
-rw-rw-r-- boegel/boegel 1587 2023-05-18 09:27 2021.12/init/README.md
-rwxrwxr-x boegel/boegel 4410 2023-05-18 09:27 2021.12/init/eessi_software_subdir_for_host.py
-rw-rw-r-- boegel/boegel 3086 2023-05-18 09:27 2021.12/init/test.py
-rwxrwxr-x boegel/boegel 5206 2023-05-18 09:27 2021.12/init/eessi_archdetect.sh
-rw-rw-r-- boegel/boegel  874 2023-05-18 09:27 2021.12/init/minimal_eessi_env
drwxrwxr-x boegel/boegel    0 2023-05-18 09:27 2021.12/init/arch_specs/
-rwxrwxr-x boegel/boegel  333 2023-05-18 09:27 2021.12/init/arch_specs/eessi_arch_arm.spec
-rwxrwxr-x boegel/boegel  157 2023-05-18 09:27 2021.12/init/arch_specs/eessi_arch_ppc.spec
-rwxrwxr-x boegel/boegel  450 2023-05-18 09:27 2021.12/init/arch_specs/eessi_arch_x86.spec
drwxrwxr-x boegel/boegel    0 2023-05-18 09:27 2021.12/init/Magic_Castle/
-rw-rw-r-- boegel/boegel 1307 2023-05-18 09:27 2021.12/init/Magic_Castle/bash
-rwxrwxr-x boegel/boegel  801 2023-05-18 09:27 2021.12/init/Magic_Castle/eessi_pilot_python3
drwxrwxr-x boegel/boegel    0 2023-05-18 09:34 2021.12/versions/
drwxrwxr-x boegel/boegel    0 2023-05-18 09:34 2021.12/versions/2021.06/
drwxrwxr-x boegel/boegel    0 2023-05-18 09:27 2021.12/versions/2021.06/init/
-rw-rw-r-- boegel/boegel  140 2023-05-18 09:27 2021.12/versions/2021.06/init/bash
-rwxrwxr-x boegel/boegel  807 2023-05-18 09:27 2021.12/versions/2021.06/init/print_deprecation_warning.sh
drwxrwxr-x boegel/boegel    0 2023-05-18 09:27 2021.12/versions/2021.06/init/Magic_Castle/
-rw-rw-r-- boegel/boegel  153 2023-05-18 09:27 2021.12/versions/2021.06/init/Magic_Castle/bash

only the top-level init dir should be included:

$ tar tfvz eessi-2021.12-init-1684396813.tar.gz
drwxrwxr-x boegel/boegel 0 2023-05-18 10:00 2021.12/
drwxrwxr-x boegel/boegel 0 2023-05-18 09:27 2021.12/init/
-rw-rw-r-- boegel/boegel 3411 2023-05-18 09:27 2021.12/init/eessi_environment_variables
-rw-rw-r-- boegel/boegel  372 2023-05-18 09:27 2021.12/init/eessi_defaults
-rw-rw-r-- boegel/boegel 1257 2023-05-18 09:27 2021.12/init/bash
-rw-rw-r-- boegel/boegel 1587 2023-05-18 09:27 2021.12/init/README.md
-rwxrwxr-x boegel/boegel 4410 2023-05-18 09:27 2021.12/init/eessi_software_subdir_for_host.py
-rw-rw-r-- boegel/boegel 3086 2023-05-18 09:27 2021.12/init/test.py
-rwxrwxr-x boegel/boegel 5206 2023-05-18 09:27 2021.12/init/eessi_archdetect.sh
-rw-rw-r-- boegel/boegel  874 2023-05-18 09:27 2021.12/init/minimal_eessi_env
drwxrwxr-x boegel/boegel    0 2023-05-18 09:27 2021.12/init/arch_specs/
-rwxrwxr-x boegel/boegel  333 2023-05-18 09:27 2021.12/init/arch_specs/eessi_arch_arm.spec
-rwxrwxr-x boegel/boegel  157 2023-05-18 09:27 2021.12/init/arch_specs/eessi_arch_ppc.spec
-rwxrwxr-x boegel/boegel  450 2023-05-18 09:27 2021.12/init/arch_specs/eessi_arch_x86.spec
drwxrwxr-x boegel/boegel    0 2023-05-18 09:27 2021.12/init/Magic_Castle/
-rw-rw-r-- boegel/boegel 1307 2023-05-18 09:27 2021.12/init/Magic_Castle/bash
-rwxrwxr-x boegel/boegel  801 2023-05-18 09:27 2021.12/init/Magic_Castle/eessi_pilot_python3

[eessi-bot]

Instance eessi-bot-citc-aws is configured to build:

• arch x86_64/generic for repo EESSI-pilot
• arch x86_64/intel/haswell for repo EESSI-pilot
• arch x86_64/intel/skylake_avx512 for repo EESSI-pilot
• arch x86_64/amd/zen2 for repo EESSI-pilot
• arch x86_64/amd/zen3 for repo EESSI-pilot
• arch aarch64/generic for repo EESSI-pilot
• arch aarch64/graviton2 for repo EESSI-pilot
• arch aarch64/graviton3 for repo EESSI-pilot