Remove internal lustre paths (#1148)

Remove internal /lusre paths

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

* **Configuration Updates**
* Set a concrete default container image to an NVIDIA PyTorch container
for templates.
* Removed built-in default values in scripts; key environment/config
variables must be provided externally.
* Replaced absolute example paths with placeholder relative paths and
TODO notes requiring user customization.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

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Signed-off-by: Keval Morabia <28916987+kevalmorabia97@users.noreply.github.com>

examples/windows/torch_onnx/diffusers/qad_example/ltx2_qad.yaml

@@ -1,9 +1,9 @@
 # LTX-2 QAD Training Configuration
 model:
-  model_path: "/lustre/fsw/portfolios/adlr/projects/adlr_psx_numerics/users/ynankani/ComfyUI/models/checkpoints/ltx-av-step-1933500-split-new-vae.safetensors"
+  model_path: "/path/to/ltx2/checkpoint.safetensors"  # TODO: Set your LTX-2 checkpoint path
   training_mode: "full"
   load_checkpoint:
-  text_encoder_path: "/lustre/fsw/portfolios/adlr/users/dhutchins/models/gemma"
+  text_encoder_path: "/path/to/gemma"  # TODO: Set your Gemma text encoder path
 
 training_strategy:
   name: "text_to_video"
@@ -26,7 +26,7 @@ acceleration:
   load_text_encoder_in_8bit: true
 
 data:
-  preprocessed_data_root: "/lustre/fsw/portfolios/adlr/users/scavallari/ltx-qad/qad-dataset"
+  preprocessed_data_root: "/path/to/preprocessed"  # TODO: Set your preprocessed dataset path
   num_dataloader_workers: 2
 
 validation: