Add Cookbook Uploads

[wheatevo]

Here is my first pass at adding cookbook uploads to go-chef/chef.

Changes:

• Add support for cookbook uploads (V0 and V2)
• Add support for chefignore files
• Improve metadata.rb parsing to conform with Chef API
• Add ServerApiVersion customization to http
• Minor linting changes for newer golang versions
• Updated integration test golang to 1.21

Resolves #250

Both unit and integration tests have been added for the new features. Please take a look and let me know what you think.

[wheatevo]

At this point all integration tests pass with the exception of the following unrelated tests:

  Command: `/go/src/testapi/bin/policy`
     [PASS]  stderr is expected not to match /error|no such file|cannot find|not used|undefined/
     [PASS]  stderr is expected to match /Issue getting nothere.*404/
     [FAIL]  stdout is expected to match /List policies map\[testsamp:\{Uri/
     expected "List policies map[]\nGet  map[]\nGet  revision {RevisionID: Name: RunList:[] NamedRunList:map[] Incl...lutionDependencies:{PolicyFile:[] Dependencies:<nil>}}\nGet nothere map[]\nDelete testsamp2 map[]\n" to match /List policies map\[testsamp:\{Uri/
     [FAIL]  stdout is expected to match /Get testsamp.* map\[revisions:map/
     expected "List policies map[]\nGet  map[]\nGet  revision {RevisionID: Name: RunList:[] NamedRunList:map[] Incl...lutionDependencies:{PolicyFile:[] Dependencies:<nil>}}\nGet nothere map[]\nDelete testsamp2 map[]\n" to match /Get testsamp.* map\[revisions:map/
     [FAIL]  stdout is expected to match /Get testsamp.* revision \{RevisionID/
     expected "List policies map[]\nGet  map[]\nGet  revision {RevisionID: Name: RunList:[] NamedRunList:map[] Incl...lutionDependencies:{PolicyFile:[] Dependencies:<nil>}}\nGet nothere map[]\nDelete testsamp2 map[]\n" to match /Get testsamp.* revision \{RevisionID/
     [FAIL]  stdout is expected to match /Delete revision .*from testsamp.*\{RevisionID/
     expected "List policies map[]\nGet  map[]\nGet  revision {RevisionID: Name: RunList:[] NamedRunList:map[] Incl...lutionDependencies:{PolicyFile:[] Dependencies:<nil>}}\nGet nothere map[]\nDelete testsamp2 map[]\n" to match /Delete revision .*from testsamp.*\{RevisionID/
  Command: `/go/src/testapi/bin/policygroup`
     [PASS]  stderr is expected not to match /error|no such file|cannot find|not used|undefined/
     [FAIL]  stdout is expected to match /List policy_groups map.*testgroup:\{Uri/
     expected "List policy_groups map[]\nGet testgroup {Uri: Policies:map[]}\nGet testgroup::testsamp {RevisionID: ... SolutionDependencies:{PolicyFile:[] Dependencies:<nil>}}\nDelete testgroup {Uri: Policies:map[]}\n" to match /List policy_groups map.*testgroup:\{Uri/

Taking a closer look at master branch test results to ensure this isn't a regression.

EDIT: Confirmed that this is present in master as well.

[MarkGibbons]

That's not likely to be something you caused.

[MarkGibbons]

I was stuck for a while on #249. I'll get to this PR within the next couple weeks.

[MarkGibbons]

Working on this one now.