add systemd full_version and ensure version is integer

[konstruktoid]

SUMMARY

The current systemd fact fails if the version isn't an integer, which it isn't when testing release candidates.

This PR:

• ensures the version fact is an integer.
• adds full_version which include system specific details in addition to the version.

ISSUE TYPE

• Bugfix Pull Request

ADDITIONAL INFORMATION

ok: [testhost] => {
    "msg": {
        "features": "+PAM +AUDIT +SELINUX -APPARMOR +IMA +SMACK +SECCOMP -GCRYPT +GNUTLS +OPENSSL +ACL +BLKID +CURL +ELFUTILS +FIDO2 +IDN2 -IDN -IPTC +KMOD +LIBCRYPTSETUP +LIBFDISK +PCRE2 +PWQUALITY +P11KIT +QRENCODE +TPM2 +BZIP2 +LZ4 +XZ +ZLIB +ZSTD +BPF_FRAMEWORK +XKBCOMMON +UTMP +SYSVINIT default-hierarchy=unified",
        "full_version": "254.10-1.fc39",
        "version": 254
    }
}

ok: [testhost] => {
    "msg": {
        "features": "+PAM +AUDIT +SELINUX +APPARMOR +IMA +SMACK +SECCOMP +GCRYPT +GNUTLS +OPENSSL +ACL +BLKID +CURL +ELFUTILS +FIDO2 +IDN2 -IDN +IPTC +KMOD +LIBCRYPTSETUP +LIBFDISK +PCRE2 -PWQUALITY -P11KIT -QRENCODE +BZIP2 +LZ4 +XZ +ZLIB +ZSTD -XKBCOMMON +UTMP +SYSVINIT default-hierarchy=unified",
        "full_version": "249.11-0ubuntu3.12",
        "version": 249
    }
}

127.0.0.1 | SUCCESS => {
    "ansible_facts": {
        "ansible_systemd": {
            "features": "+PAM +AUDIT +SELINUX +APPARMOR +IMA +SMACK +SECCOMP +GCRYPT +GNUTLS +OPENSSL +ACL +BLKID +CURL +ELFUTILS +FIDO2 +IDN2 -IDN +IPTC +KMOD +LIBCRYPTSETUP +LIBCRYPTSETUP_PLUGINS +LIBFDISK +PCRE2 -PWQUALITY +P11KIT +QRENCODE +TPM2 +BZIP2 +LZ4 +XZ +ZLIB +ZSTD -BPF_FRAMEWORK -XKBCOMMON +UTMP +SYSVINIT -LIBARCHIVE",
            "full_version": "256~rc2",
            "version": 256
        },

[ansibot]

The test ansible-test sanity --test pep8 [explain] failed with 1 error:

lib/ansible/module_utils/facts/system/systemd.py:54:29: W292: no newline at end of file

The test ansible-test sanity --test pylint [explain] failed with 1 error:

lib/ansible/module_utils/facts/system/systemd.py:54:0: missing-final-newline: Final newline missing

click here for bot help

[ansibot]

The test ansible-test sanity --test pep8 [explain] failed with 1 error:

lib/ansible/module_utils/facts/system/systemd.py:55:1: W391: blank line at end of file

The test ansible-test sanity --test pylint [explain] failed with 1 error:

lib/ansible/module_utils/facts/system/systemd.py:55:0: trailing-newlines: Trailing newlines

click here for bot help

[konstruktoid]

#83291 (comment) vs #83291 (comment)