Created service end point for NuGet

[innagarc]

All Submissions:

• Have you added an explanation of what your changes do and why you'd like us to include them?
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.
• My code follows the code style of this project.
• I ran lint checks locally prior to submission.
• Have you checked to ensure there aren't other open PRs for the same update/change?

What about the current behavior has changed?

Added the ability to create service connections for NuGet, supporting 3 types of authentication

Unit tests passing:

--- PASS: TestServiceEndpointNuget_ExpandFlatten_RoundtripPassword (0.00s)
--- PASS: TestServiceEndpointNuget_ExpandFlatten_RoundtripToken (0.00s)
--- PASS: TestServiceEndpointNuget_ExpandFlatten_RoundtripKey (0.00s)
--- PASS: TestServiceEndpointNuget_Create_DoesNotSwallowErrorToken (0.00s)
--- PASS: TestServiceEndpointNuget_Create_DoesNotSwallowErrorKey (0.00s)
--- PASS: TestServiceEndpointNuget_Create_DoesNotSwallowErrorPassword (0.00s)
--- PASS: TestServiceEndpointNuget_Read_DoesNotSwallowErrorToken (0.00s)
--- PASS: TestServiceEndpointNuget_Read_DoesNotSwallowErrorKey (0.00s)
--- PASS: TestServiceEndpointNuget_Read_DoesNotSwallowErrorPassword (0.00s)
--- PASS: TestServiceEndpointNuget_Delete_DoesNotSwallowErrorToken (0.00s)
--- PASS: TestServiceEndpointNuget_Delete_DoesNotSwallowErrorKey (0.00s)
--- PASS: TestServiceEndpointNuget_Delete_DoesNotSwallowErrorPassword (0.00s)
--- PASS: TestServiceEndpointNuget_Update_DoesNotSwallowErrorToken (0.00s)
--- PASS: TestServiceEndpointNuget_Update_DoesNotSwallowErrorKey (0.00s)
--- PASS: TestServiceEndpointNuget_Update_DoesNotSwallowErrorPassword (0.00s)

Acceptance tests passing:

--- PASS: TestAccServiceEndpointNuget_basic_token (66.30s)
--- PASS: TestAccServiceEndpointNuget_basic_key (66.33s)
--- PASS: TestAccServiceEndpointNuget_complete_usernamepassword (66.36s)
--- PASS: TestAccServiceEndpointNuget_complete_token (66.43s)
--- PASS: TestAccServiceEndpointNuget_RequiresImportErrorStepUsernamePassword (72.52s)
--- PASS: TestAccServiceEndpointNuget_complete_key (73.44s)
--- PASS: TestAccServiceEndpointNuget_basic_usernamepassword (73.60s)
--- PASS: TestAccServiceEndpointNuget_RequiresImportErrorStepToken (76.63s)
--- PASS: TestAccServiceEndpointNuget_RequiresImportErrorStepKey (77.22s)
--- PASS: TestAccServiceEndpointNuget_update_key (96.96s)
--- PASS: TestAccServiceEndpointNuget_update_token (100.65s)
--- PASS: TestAccServiceEndpointNuget_update_usernamepassword (100.68s)

Issue Number:

Does this introduce a change to go.mod, go.sum or vendor/?

• Yes
• No

Does this introduce a breaking change?

• Yes
• No

Any relevant logs, error output, etc?

(If it’s long, please paste to https://ghostbin.com/ and insert the link here.)

Other information

[innagarc]

@davidcorrigan714 : Please review now. I believe that it is now completely ready to be submitted.

[davidcorrigan714]

Need to remove all references to that hashing & diff functions.

[innagarc]

@davidcorrigan714 All requested changes addressed, Can you please help this PR get in, if fine?

[davidcorrigan714]

oops, username should be read in this case. With the Artifactory ones it doesn't work because the username field got marked as sensitive in the AzDO service connection extension by accident. JFrog will fix that in their next extension release. For all practical purposes it doesn't matter, but may want to fix it for upstreaming. @innagarc

[davidcorrigan714]

Also probably shouldn't be sensitive if it's not in the service connection.