[Test] enable all the skipped test

[wangxiyuan]

We notice that a lot of UT and E2E test are skipped, we should reenable them.

E2E:

• test_fused_moe_allgather_ep.py (Need CANN and PTA upgrade)
• test_e2e_pangu_with_torchair @Angazenn
• test_external_launcher.py [Test] enable external launcher and add e2e test for sleep mode in level2 #3344 @loukong33
• test_pipeline_parallel.py @leo-pony
• spec decode @wxsIcey

UT: @zhangxinyuehfad

• test_platform.py
• test_patch_minicpm.py
• test_scheduler.py
• test_llmdatadist_connector.py
• test_mooncake_connector.py
• test_remote_decode_lifecycle.py
• test_remote_prefill_lifecycle.py
• test_torchair_deepseek_v2.py
• test_utils.py

[leo-pony]

test_pipeline_parallel.py has finished. Corresponding PR3391 has been merged in.

[zhangxinyuehfad]

UT tests passed, PR submitted:
#3410

[menogrey]

test_utils.py has finished. Corresponding #3422 has been merged in.