fix fp16 Qwen2 series model to DeepSpeed-FastGen (#6028)
based on PR #5403 (Qwen1.5-MOE) and #5219 (Qwen1.5), support Qwen2
series model.
including: 0.5B, 1.5B, 7B, 57B-A14B, and 72B models.
Co-authored-by: Logan Adams <114770087+loadams@users.noreply.github.com>
