[CI] Add launch modes and available blocks tests in e2e test

[s5u13b]

1. Add launch modes test to ensure that llumnix can launch correctly under different '--disable-init-instance-by-manager' and '--disable-fixed-node-init-instance' combinations.
2. Add available blocks test to ensure that migrations do not cause kv cache blocks leaking.

[github-actions]

prefill	p25	p50	p75	p95	p99	mean
latency(ms)	36931.39	100444.21	187704.16	219351.37	232893.84	109926.42

decode	p25	p50	p75	p95	p99	mean
latency(ms)	52.32	57.39	70.24	114.02	194.76	66.69

[github-actions]

migration_size	8.00 MB	16.00 MB	24.00 MB	32.00 MB	40.00 MB	48.00 MB	56.00 MB	64.00 MB	72.00 MB	80.00 MB	88.00 MB	96.00 MB	104.00 MB	112.00 MB	120.00 MB	128.00 MB	136.00 MB	144.00 MB	152.00 MB	160.00 MB	176.00 MB	192.00 MB	312.00 MB	352.00 MB	472.00 MB	544.00 MB	560.00 MB	592.00 MB	688.00 MB	960.00 MB
rpc_speed(GB/s)	1.03	1.51	1.73	1.87	1.97	2.08	2.11	2.14	2.20	2.26	2.23	2.28	2.29	2.34	2.37	2.36	2.38	2.44	2.30	2.44	2.46	2.47	2.68	2.74	3.00	2.54	3.16	2.99	3.28	3.38

migration_size	8.00 MB	16.00 MB	24.00 MB	32.00 MB	40.00 MB	48.00 MB	56.00 MB	64.00 MB	72.00 MB	80.00 MB	88.00 MB	96.00 MB	104.00 MB	112.00 MB	120.00 MB	128.00 MB	136.00 MB	152.00 MB	160.00 MB	168.00 MB	176.00 MB	200.00 MB	312.00 MB	352.00 MB	472.00 MB	560.00 MB	688.00 MB
gloo_speed(GB/s)	0.92	1.64	2.04	2.27	2.37	2.76	2.89	2.30	3.01	3.11	2.69	2.73	3.12	2.62	3.85	2.82	2.67	2.60	2.27	1.76	3.10	2.90	2.46	2.64	2.72	2.37	2.58

migration_size	8.00 MB	16.00 MB	24.00 MB	32.00 MB	40.00 MB	48.00 MB	56.00 MB	64.00 MB	72.00 MB	80.00 MB	88.00 MB	96.00 MB	104.00 MB	112.00 MB	120.00 MB	128.00 MB	136.00 MB	144.00 MB	152.00 MB	160.00 MB	168.00 MB	176.00 MB	184.00 MB	192.00 MB	280.00 MB	312.00 MB	320.00 MB	328.00 MB	472.00 MB	544.00 MB
nccl_speed(GB/s)	0.19	0.45	0.73	0.95	1.09	1.37	1.17	1.39	1.69	1.66	1.78	2.02	2.15	2.70	2.49	2.91	3.00	2.25	3.16	2.91	3.54	2.93	3.20	4.06	1.37	4.46	4.39	4.07	6.40	4.80

[github-actions]

migration_size	8.00 MB	16.00 MB	24.00 MB	32.00 MB	40.00 MB	48.00 MB	56.00 MB	64.00 MB	72.00 MB	80.00 MB	88.00 MB	96.00 MB	104.00 MB	112.00 MB	120.00 MB	128.00 MB	136.00 MB	144.00 MB	152.00 MB	160.00 MB	168.00 MB	176.00 MB	200.00 MB	312.00 MB	320.00 MB	328.00 MB	472.00 MB	552.00 MB	560.00 MB	576.00 MB
rpc_speed(GB/s)	1.03	1.51	1.79	1.90	1.98	2.08	2.15	2.13	2.20	2.24	2.34	2.36	2.26	2.33	2.24	2.39	2.38	2.19	2.44	2.43	2.57	2.22	2.44	2.80	2.73	2.56	3.12	3.18	3.21	2.89

migration_size	8.00 MB	16.00 MB	24.00 MB	32.00 MB	40.00 MB	48.00 MB	56.00 MB	64.00 MB	72.00 MB	80.00 MB	88.00 MB	96.00 MB	104.00 MB	112.00 MB	120.00 MB	128.00 MB	136.00 MB	144.00 MB	152.00 MB	160.00 MB	168.00 MB	176.00 MB	184.00 MB	312.00 MB	328.00 MB	472.00 MB	552.00 MB	560.00 MB	592.00 MB	736.00 MB	960.00 MB
gloo_speed(GB/s)	1.09	1.64	2.00	2.38	2.63	2.84	2.95	3.12	2.98	3.02	3.16	3.51	2.89	3.59	2.85	2.46	2.95	2.84	2.99	2.58	0.84	3.15	2.93	2.43	3.02	3.10	3.21	2.02	3.19	3.05	2.98

migration_size	8.00 MB	16.00 MB	24.00 MB	32.00 MB	40.00 MB	48.00 MB	56.00 MB	64.00 MB	72.00 MB	80.00 MB	88.00 MB	96.00 MB	104.00 MB	112.00 MB	120.00 MB	128.00 MB	136.00 MB	152.00 MB	160.00 MB	168.00 MB	176.00 MB	192.00 MB	312.00 MB	320.00 MB	376.00 MB	472.00 MB	536.00 MB	544.00 MB	560.00 MB	576.00 MB
nccl_speed(GB/s)	0.19	0.52	0.56	0.87	1.18	1.27	1.32	1.41	1.75	2.00	1.83	1.91	2.00	2.19	2.68	2.62	3.01	2.91	2.52	3.32	4.00	0.74	4.19	3.64	5.08	4.87	4.84	3.85	3.96	4.38

[github-actions]

prefill	p25	p50	p75	p95	p99	mean
latency(ms)	25919.14	102694.89	205764.14	243420.55	250292.08	110472.42

decode	p25	p50	p75	p95	p99	mean
latency(ms)	52.85	57.82	69.51	130.87	322.97	70.18