Allow bypassing curl package ensure if needed

[esalberg]

Even with ensure_packages, there can be resource duplication errors if the parameters do not match. Add an option not to ensure the curl package (curl package is ensured by default to maintain status quo).

[esalberg]

rebased.

[esalberg]

rebased.

[esalberg]

Spec is fixed.

[lionce]

Hello @esalberg ,

This looks good for me, but would it be possible to add some tests to verify that this is working as intended? Thanks.

Cheers!

[sheenaajay]

Hello @esalberg, Please let us know if you need any help or information on adding the tests to verify the changes.Thanks for submitting the PR.

[lionce]

Hello @esalberg ,

Please let us know if you're still working on this PR and if we can help you! Thanks!

Cheers!

[david22swan]

@esalberg Sorry to keep pinging, but is there any chance that you're gonna come back and finish this?

[david22swan]

Have rebased the work on current master and pushed up

[codecov-io]

Codecov Report

Merging #477 into master will not change coverage by %.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #477   +/-   ##
=======================================
  Coverage   28.02%   28.02%           
=======================================
  Files          19       19           
  Lines         685      685           
=======================================
  Hits          192      192           
  Misses        493      493           

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