Fix lint errors for integ repository

[Manoel Benedito Neto]

Brief Description
-----------------
Lint errors are reported on integ repository. Line-length, truthy, new-line-at-end-of-file, indentation and document-start are the type of errors reported by Zuul after running the stx-integ-pylint job.

Evaluate the possible solution for each of the lint errors and ensure the stx-integ-pylint job run successfully.

Severity
--------
Major

Steps to Reproduce
------------------
Open up a code review on OpenDev platform and wait for Zuul checks.

Expected Behavior
-----------------
Open a code review on integ repository, stx-integ-pylint job obtains success after run on integ repository.

Actual Behavior
----------------
tx-integ-pylint job fails.

Reproducibility
---------------
Reproducible

System Configuration
--------------------
n/a

Last Pass
---------
March 10th

Timestamp/Logs
--------------
n/a

Test Activity
-------------
n/a

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/c/starlingx/integ/+/877427

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/starlingx/integ/+/877427
Committed: https://opendev.org/starlingx/integ/commit/c15e3e1a3af2c797caa1bc408315beb0101ae623
Submitter: "Zuul (22348)"
Branch: master

commit c15e3e1a3af2c797caa1bc408315beb0101ae623
Author: Manoel Benedito Neto <email address hidden>
Date: Tue Mar 14 18:38:44 2023 -0300

    Fix lint errors identified by Zuul pylint job

    This commit fixes lint errors identified by Zuul after stx-integ-pylint
    job is executed.

    Test Plan:
    PASS: stx-integ-pylint job is executed successfully.
    PASS: Run "yamllint ." command on integ repo base directory. Observe
          that no lint errors of line-length, truthy, indentation,
          new-line-at-end-of-file and document-start are listed.
    PASS: build-pkgs -a -c

    Closes-Bug: 2011632
    Change-Id: I4d8229b5de8c9d88ff2aab6169521ab377b5866c
    Signed-off-by: Manoel Benedito Neto <email address hidden>