Provide an option to specify network concurrency arg for yarn

[denis-anisimov]

Fixes #4122

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This change is 

[caalador]

Reviewed 4 of 4 files at r1.
Review status: all files reviewed at latest revision, all discussions resolved.

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a discussion (no related file):
Seems fine, but would it be possible to drop the formatting changes as the actual changes are hard to see as they are a couple of lines and formatting changes are whole files.

Maven plugin sources should all be formatted to use the same formatting.

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Comments from Reviewable

[denis-anisimov]

Review status: all files reviewed at latest revision, 1 unresolved discussion.

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a discussion (no related file):

Previously, caalador wrote…

Seems fine, but would it be possible to drop the formatting changes as the actual changes are hard to see as they are a couple of lines and formatting changes are whole files.

Maven plugin sources should all be formatted to use the same formatting.

Do you have any idea how to do it easily ?
Formatting is already applied and the only way I see is rewrite the code from scratch with formatting disabled.

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Comments from Reviewable

[caalador]

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Review status: all files reviewed at latest revision, 1 unresolved discussion.

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a discussion (no related file):

Previously, denis-anisimov (Denis) wrote…

Do you have any idea how to do it easily ?
Formatting is already applied and the only way I see is rewrite the code from scratch with formatting disabled.

No good ideas. Let's go with this and create a ticket to format all maven plugin code.

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Comments from Reviewable

[denis-anisimov]

Review status: all files reviewed at latest revision, all discussions resolved, all commit checks successful.

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a discussion (no related file):

Previously, caalador wrote…

No good ideas. Let's go with this and create a ticket to format all maven plugin code.

OK.

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Comments from Reviewable