[WB-3423] add sweep_id attribute

[coveralls]

Pull Request Test Coverage Report for Build 8e2d592f-9c71-4e25-a407-9376196e7e68

• 4 of 8 (50.0%) changed or added relevant lines in 3 files are covered.
• 969 unchanged lines in 49 files lost coverage.
• Overall coverage decreased (-4.04%) to 61.268%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
wandb/sdk/wandb_run.py	2	6	33.33%
<!--	Total:	4	8	50.0%	-->

Files with Coverage Reduction	New Missed Lines	%
tests/utils/mock_server.py	1	84.91%
wandb/apis/internal_runqueue.py	1	22.42%
wandb/internal/internal.py	1	27.89%
wandb/internal/meta.py	1	70.8%
wandb/internal/run.py	1	61.54%
wandb/lib/ipython.py	1	71.43%
wandb/old/core.py	1	57.63%
wandb/sdk/wandb_config.py	1	70.27%
wandb/sdk/wandb_login.py	1	91.04%
wandb/sweeps/base.py	1	80.0%
<!--	Total:	969		-->

Totals
Change from base Build 4078c5c6-4147-43db-92a5-dba3bf3d2c46:	-4.04%
Covered Lines:	13066
Relevant Lines:	21326

---

💛 - Coveralls