dummy server: graceful shutdown

[shogo82148]

No description provided.

[github-actions]

Code Metrics Report

	main (fdfbff0)	#603 (1d17328)	+/-
Coverage	52.1%	51.8%	-0.3%
Test Execution Time	24s	24s	0s

Details

  |                     | main (fdfbff0) | #603 (1d17328) |  +/-  |
  |---------------------|----------------|----------------|-------|
- | Coverage            |          52.1% |          51.8% | -0.3% |
  |   Files             |              7 |              7 |     0 |
  |   Lines             |            384 |            386 |    +2 |
  |   Covered           |            200 |            200 |     0 |
  | Test Execution Time |            24s |            24s |    0s |

Code coverage of files in pull request scope (5.3% → 4.8%)

Files	Coverage	+/-
provider/assume-role/dummy.go	4.8%	-0.5%

---

Reported by octocov

[github-actions]

Code Metrics Report

	main (fdfbff0)	fix-failing-test (8d9dafb)	+/-
Coverage	52.1%	51.8%	-0.3%
Test Execution Time	24s	31s	+7s

Details

  |                     | main (fdfbff0) | fix-failing-test (8d9dafb) |  +/-  |
  |---------------------|----------------|----------------------------|-------|
- | Coverage            |          52.1% |                      51.8% | -0.3% |
  |   Files             |              7 |                          7 |     0 |
  |   Lines             |            384 |                        386 |    +2 |
  |   Covered           |            200 |                        200 |     0 |
- | Test Execution Time |            24s |                        31s |   +7s |

Code coverage of files in pull request scope (5.3% → 4.8%)

Files	Coverage	+/-
provider/assume-role/dummy.go	4.8%	-0.5%

---

Reported by octocov