Fix linting and formatting issues in the tools package

[fdrozdowski]

Pull request checklist

Please check if your PR fulfills the following requirements:

• Tests for the changes have been added (for bug fixes / features)
• Docs have been reviewed and added / updated if needed (for bug fixes / features)
• Build was run locally and any changes were pushed
• Lint has passed locally and any fixes were made for failures

Pull request type

Please check the type of change your PR introduces:

• Bugfix
• Feature
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no api changes)
• Build related changes
• Documentation content changes
• Other (please describe):

What is the current behavior?

The linter GitHub action started failing with the following errors:

src/test/python/dlpx/virtualization/_internal/test_file_util.py:38:89: E501 line too long (92 > 88 characters)
src/test/python/dlpx/virtualization/_internal/test_file_util.py:89:89: E501 line too long (102 > 88 characters)
src/test/python/dlpx/virtualization/_internal/test_plugin_importer.py:47:82: W291 trailing whitespace
src/test/python/dlpx/virtualization/_internal/test_plugin_importer.py:50:1: W293 blank line contains whitespace
src/test/python/dlpx/virtualization/_internal/test_plugin_importer.py:51:44: W291 trailing whitespace
src/test/python/dlpx/virtualization/_internal/test_plugin_importer.py:83:9: F841 local variable 'manifest' is assigned to but never used
src/test/python/dlpx/virtualization/_internal/test_plugin_importer.py:99:9: F841 local variable 'manifest' is assigned to but never used
src/test/python/dlpx/virtualization/_internal/test_plugin_importer.py:116:9: F841 local variable 'manifest' is assigned to but never used
src/test/python/dlpx/virtualization/_internal/commands/test_build.py:445:1: E101 indentation contains mixed spaces and tabs
src/test/python/dlpx/virtualization/_internal/commands/test_build.py:445:1: W191 indentation contains tabs
src/test/python/dlpx/virtualization/_internal/commands/test_build.py:504:1: E101 indentation contains mixed spaces and tabs
src/test/python/dlpx/virtualization/_internal/commands/test_build.py:504:1: W191 indentation contains tabs
src/test/python/dlpx/virtualization/_internal/commands/test_build.py:504:89: E501 line too long (101 > 88 characters)
src/test/python/dlpx/virtualization/_internal/commands/test_build.py:505:1: E101 indentation contains mixed spaces and tabs
src/test/python/dlpx/virtualization/_internal/commands/test_build.py:505:1: W191 indentation contains tabs
src/test/python/dlpx/virtualization/_internal/commands/test_build.py:506:1: E101 indentation contains mixed spaces and tabs
src/test/python/dlpx/virtualization/_internal/commands/test_build.py:506:1: W191 indentation contains tabs
src/test/python/dlpx/virtualization/_internal/commands/test_build.py:507:1: E101 indentation contains mixed spaces and tabs
src/test/python/dlpx/virtualization/_internal/commands/test_build.py:507:1: W191 indentation contains tabs
src/test/python/dlpx/virtualization/_internal/commands/test_build.py:508:1: E101 indentation contains mixed spaces and tabs
src/test/python/dlpx/virtualization/_internal/commands/test_build.py:508:1: W191 indentation contains tabs
src/test/python/dlpx/virtualization/_internal/commands/test_build.py:509:1: E101 indentation contains mixed spaces and tabs
src/test/python/dlpx/virtualization/_internal/commands/test_build.py:509:1: W191 indentation contains tabs
src/test/python/dlpx/virtualization/_internal/commands/test_codegen.py:374:89: E501 line too long (89 > 88 characters)

(see https://github.com/delphix/virtualization-sdk/pull/128/checks?check_run_id=668547116)

What is the new behavior?

Ran formatting and linting tools locally to fix all the precommit errors.

Does this introduce a breaking change?

• Yes
• No

Other information