[WIP] Use core's before_install after cloning it

[Fryguy]

Trying out sharing the "before_install" script from core.

[Fryguy]

Not sure about this one just yet...I'm also refactoring core, and this might go away.

[Fryguy]

cc @agrare Just wanted to bring your attention to this after your blaster outer in #768

[kbrock]

@Fryguy can you rebase/un WIP this?
Seems it would be ready, especially after adam's before_install blaster outer.
(or seems it could just be closed)

[miq-bot]

Checked commit Fryguy@cfbe40a with ruby 2.6.9, rubocop 1.19.1, haml-lint 0.35.0, and yamllint
0 files checked, 0 offenses detected
Everything looks fine. 👍

[miq-bot]

This pull request has been automatically marked as stale because it has not been updated for at least 3 months.

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[miq-bot]

This pull request has been automatically marked as stale because it has not been updated for at least 3 months.

If these changes are still valid, please remove the stale label, make any changes requested by reviewers (if any), and ensure that this issue is being looked at by the assigned/reviewer(s)

Thank you for all your contributions! More information about the ManageIQ triage process can be found in the triage process documentation.

[miq-bot]

This pull request has been automatically marked as stale because it has not been updated for at least 3 months.

If these changes are still valid, please remove the stale label, make any changes requested by reviewers (if any), and ensure that this issue is being looked at by the assigned/reviewer(s)

Thank you for all your contributions! More information about the ManageIQ triage process can be found in the triage process documentation.

[miq-bot]

This pull request has been automatically marked as stale because it has not been updated for at least 3 months.

If these changes are still valid, please remove the stale label, make any changes requested by reviewers (if any), and ensure that this issue is being looked at by the assigned/reviewer(s).

[miq-bot]

This pull request has been automatically marked as stale because it has not been updated for at least 3 months.

If these changes are still valid, please remove the stale label, make any changes requested by reviewers (if any), and ensure that this issue is being looked at by the assigned/reviewer(s).

[miq-bot]

This pull request has been automatically marked as stale because it has not been updated for at least 3 months.

If these changes are still valid, please remove the stale label, make any changes requested by reviewers (if any), and ensure that this issue is being looked at by the assigned/reviewer(s).