[devscripts] use boolean conditionals in devscripts tasks

[fultonj]

Newer Ansible requires conditionals to resolve to explicit boolean values rather than relying on truthiness of other types.

132_extend_lvm.yml: replace bare dict checks for ansible_lvm and root_mount_data with | length > 0.

137_custom_install.yml: remove erroneous double quotes wrapping the version test expression, which caused it to be evaluated as a non-empty string (always True) instead of a boolean.

Assisted-By: Claude Sonnet 4.6 noreply@anthropic.com

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[fultonj]

My deployment fails without this patch when I use the following ansible:

$ ansible --version
ansible [core 2.20.3]
  config file = /etc/ansible/ansible.cfg
  configured module search path = ['/home/johfulto/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
  ansible python module location = /home/johfulto/test-python/lib64/python3.14/site-packages/ansible
  ansible collection location = /home/johfulto/.ansible/collections:/usr/share/ansible/collections
  executable location = /home/johfulto/test-python/bin/ansible
  python version = 3.14.3 (main, Feb  4 2026, 00:00:00) [GCC 15.2.1 20260123 (Red Hat 15.2.1-7)] (/home/johfulto/test-python/bin/python3)
  jinja version = 3.1.6
  pyyaml version = 6.0.3 (with libyaml v0.2.5)

[evallesp]

I think we need to push the second file change!

[evallesp]

I think we need to push the second file change!

Actually is here: #3800

[evallesp]

Let's change the commit message and we should be good to go.