feat(kvbm): build kvbm wheel with nccl feature for CUDA containers (#8120)

Signed-off-by: Alec Flowers <aflowers@nvidia.com>

container/templates/wheel_builder.Dockerfile

@@ -584,7 +584,9 @@ RUN --mount=type=secret,id=aws-key-id,env=AWS_ACCESS_KEY_ID \
     source ${VIRTUAL_ENV}/bin/activate && \
     if [ "$ENABLE_KVBM" = "true" ]; then \
         cd /opt/dynamo/lib/bindings/kvbm && \
-        maturin build --release --out target/wheels && \
+        KVBM_FEATURES=""; \
+        if [ "$DEVICE" = "cuda" ]; then KVBM_FEATURES="--features nccl"; fi && \
+        maturin build --release ${KVBM_FEATURES} --out target/wheels && \
         if [ "$DEVICE" = "cuda" ]; then \
             auditwheel repair \
                 --exclude libnixl.so \