Fix problem with validators behaving incorrectly when running concurrently

[k1LoW]

ref: #882

[k1LoW]

OK

--- FAIL: TestOpenAPI3Validator (0.01s)
    --- FAIL: TestOpenAPI3Validator/16 (0.00s)
        http_validator_test.go:546: got error: openapi3 validation error: Error: GET operation request content type 'GET' does not exist, Reason: The path was found, but there was no 'GET' method found in the spec, Line: 7, Column: 3
            -----START HTTP REQUEST-----
            GET /users5 HTTP/0.0
            Accept: application/json
            
            
            -----END HTTP REQUEST-----
    --- FAIL: TestOpenAPI3Validator/15 (0.00s)
        http_validator_test.go:546: got error: openapi3 validation error: Error: GET operation request content type 'GET' does not exist, Reason: The path was found, but there was no 'GET' method found in the spec, Line: 7, Column: 3
            -----START HTTP REQUEST-----
            GET /users6/3 HTTP/0.0
            Accept: application/json
            
            
            -----END HTTP REQUEST-----

[github-actions]

BenchmarkManyRunbooks-4

	main (-)	#902 (4201ae2)	+/-
Number of iterations	1	1	0
Nanoseconds per iteration	3,972,719,444 ns/op	3,716,096,257 ns/op	-256,623,187 ns/op
Bytes allocated per iteration	1,793,307,720 B/op	1,792,836,048 B/op	-471,672 B/op
Allocs per iteration	21,420,030 allocs/op	21,419,434 allocs/op	-596 allocs/op

Metadata

	main (-)	#902 (4201ae2)
goos	linux	linux
goarch	amd64	amd64
pkg	github.com/k1LoW/runn	github.com/k1LoW/runn
cpu	AMD EPYC 7763 64-Core Processor	AMD EPYC 7763 64-Core Processor

BenchmarkOpenAPI3-4

	main (-)	#902 (4201ae2)	+/-
Number of iterations	1	1	0
Nanoseconds per iteration	4,952,425,519 ns/op	5,214,406,663 ns/op	261,981,144 ns/op
Bytes allocated per iteration	2,944,918,064 B/op	2,944,799,288 B/op	-118,776 B/op
Allocs per iteration	29,262,818 allocs/op	29,263,802 allocs/op	984 allocs/op

Metadata

	main (-)	#902 (4201ae2)
goos	linux	linux
goarch	amd64	amd64
pkg	github.com/k1LoW/runn	github.com/k1LoW/runn
cpu	AMD EPYC 7763 64-Core Processor	AMD EPYC 7763 64-Core Processor

BenchmarkSingleRunbook-4

	main (-)	#902 (4201ae2)	+/-
Number of iterations	19	18	-1
Nanoseconds per iteration	64,227,825 ns/op	63,787,709 ns/op	-440,116 ns/op
Bytes allocated per iteration	60,332,720 B/op	60,298,845 B/op	-33,875 B/op
Allocs per iteration	205,909 allocs/op	205,859 allocs/op	-50 allocs/op

Metadata

	main (-)	#902 (4201ae2)
goos	linux	linux
goarch	amd64	amd64
pkg	github.com/k1LoW/runn	github.com/k1LoW/runn
cpu	AMD EPYC 7763 64-Core Processor	AMD EPYC 7763 64-Core Processor

---

Reported by octocov

[github-actions]

Code Metrics Report

	main (3f5d523)	#902 (4201ae2)	+/-
Coverage	65.6%	65.6%	+0.0%
Code to Test Ratio	1:0.5	1:0.5	+0.0

Details

  |                    | main (3f5d523) | #902 (4201ae2) |  +/-  |
  |--------------------|----------------|----------------|-------|
+ | Coverage           |          65.6% |          65.6% | +0.0% |
  |   Files            |             71 |             71 |     0 |
  |   Lines            |           7679 |           7686 |    +7 |
+ |   Covered          |           5037 |           5042 |    +5 |
+ | Code to Test Ratio |          1:0.5 |          1:0.5 |  +0.0 |
  |   Code             |          22362 |          22371 |    +9 |
+ |   Test             |          10252 |          10262 |   +10 |

Code coverage of files in pull request scope (64.3% → 64.4%)

Files	Coverage	+/-
coverage.go	79.5%	0.0%
http_validator.go	81.5%	-0.5%
runner_option.go	37.5%	0.0%

---

Reported by octocov