NAT-315: Restore ISIS should be optional in migrate iptrunk

docs/source/conf.py

 # -- Project information -----------------------------------------------------
-project = 'GÉANT Service Orchestrator'
-copyright = '2023, GÉANT Vereniging'
-author = 'GÉANT Orchestration and Automation Team'
+project = "GÉANT Service Orchestrator"
+copyright = "2023, GÉANT Vereniging"
+author = "GÉANT Orchestration and Automation Team"
 
 # -- General configuration ---------------------------------------------------
-extensions = ['sphinx_rtd_theme', 'sphinx.ext.autodoc', 'sphinxcontrib.jquery']
+extensions = ["sphinx_rtd_theme", "sphinx.ext.autodoc", "sphinxcontrib.jquery"]
 
-templates_path = ['templates']
-exclude_patterns = ['build', 'Thumbs.db', '.DS_Store', 'venv', 'vale', '__init__.py']
+templates_path = ["templates"]
+exclude_patterns = ["build", "Thumbs.db", ".DS_Store", "venv", "vale", "__init__.py"]
 
 # -- Options for HTML output -------------------------------------------------
-html_theme = 'sphinx_rtd_theme'
-html_static_path = ['static']
+html_theme = "sphinx_rtd_theme"
+html_static_path = ["static"]
 html_theme_options = {
-    'style_nav_header_background': 'rgb(0 63 95)',
+    "style_nav_header_background": "rgb(0 63 95)",
 }
-html_css_files = ['custom.css']
-html_js_files = ['custom.js']
-html_logo = 'static/geant_logo_white.svg'
+html_css_files = ["custom.css"]
+html_js_files = ["custom.js"]
+html_logo = "static/geant_logo_white.svg"
 
 # Both the class' and the ``__init__`` method's docstring are concatenated and inserted.
-autoclass_content = 'both'
-autodoc_typehints = 'none'
+autoclass_content = "both"
+autodoc_typehints = "none"
 
 # Display todos by setting to True
 todo_include_todos = True
-