add curl_command as serverspec extension #171

Job	Run time
Pre	3s
Unit / Ruby 3.3	13s
Unit / Ruby 3.2	11s
Unit / Ruby 3.1	11s
Unit / Ruby 3.0	12s
Unit / Ruby 2.7	29s
Acceptance / Ruby 3.3 - no_modules	1m 4s
Acceptance / Ruby 3.3 - defaults_basic_dependency	1m 10s
Acceptance / Ruby 3.3 - defaults_no_dependencies	1m 5s
Acceptance / Ruby 3.3 - defaults_facts	1m 4s
Acceptance / Ruby 3.3 - defaults_fixtures	1m 10s
Acceptance / Ruby 3.2 - no_modules	59s
Acceptance / Ruby 3.2 - defaults_basic_dependency	1m 9s
Acceptance / Ruby 3.2 - defaults_no_dependencies	1m 4s
Acceptance / Ruby 3.2 - defaults_facts	1m 3s
Acceptance / Ruby 3.2 - defaults_fixtures	1m 12s
Acceptance / Ruby 3.1 - no_modules	56s
Acceptance / Ruby 3.1 - defaults_basic_dependency	1m 10s
Acceptance / Ruby 3.1 - defaults_no_dependencies	1m 10s
Acceptance / Ruby 3.1 - defaults_facts	1m 1s
Acceptance / Ruby 3.1 - defaults_fixtures	1m 11s
Acceptance / Ruby 3.0 - no_modules	1m 0s
Acceptance / Ruby 3.0 - defaults_basic_dependency	1m 14s
Acceptance / Ruby 3.0 - defaults_no_dependencies	1m 9s
Acceptance / Ruby 3.0 - defaults_facts	1m 3s
Acceptance / Ruby 3.0 - defaults_fixtures	1m 6s
Acceptance / Ruby 2.7 - no_modules	1m 11s
Acceptance / Ruby 2.7 - defaults_basic_dependency	1m 23s
Acceptance / Ruby 2.7 - defaults_no_dependencies	1m 22s
Acceptance / Ruby 2.7 - defaults_facts	1m 19s
Acceptance / Ruby 2.7 - defaults_fixtures	1m 19s
All tests	1s
	29m 54s

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