Allow for productization of build

[Fryguy]

@simaishi Please review

This PR adds

• the ability to pass the product name which is used to determine the rpm names as well as the built appliance name.
• the ability to specify extra repos via the productization directory under main/repos-extra.ks.erb and optionally post/repos-extra.ks.erb (which is used when the rpm names are available elsewhere)

cc @bennett-white

[Fryguy]

@simaishi I am ignoring these rubocops because they are existing code or not relevant.

[simaishi]

Please add product_name to bin/kickstart_build.rb as well.

[Fryguy]

@simaishi Updated.

[miq-bot]

Checked commit https://github.com/Fryguy/manageiq-appliance-build/commit/6af379f4d6cb3efda63af64477eea6c2465894ed with ruby 2.6.3, rubocop 0.69.0, haml-lint 0.28.0, and yamllint 8 files checked, 12 offenses detected

scripts/cli.rb

• [ ] :exclamation: - Line 10, Col 23 - Style/MutableConstant - Freeze mutable objects assigned to constants.
• [ ] :exclamation: - Line 11, Col 23 - Style/MutableConstant - Freeze mutable objects assigned to constants.
• [ ] :exclamation: - Line 12, Col 23 - Style/MutableConstant - Freeze mutable objects assigned to constants.
• [ ] :exclamation: - Line 8, Col 23 - Style/MutableConstant - Freeze mutable objects assigned to constants.
• [ ] :exclamation: - Line 8, Col 23 - Style/PercentLiteralDelimiters - %w-literals should be delimited by [ and ].
• [ ] :exclamation: - Line 9, Col 23 - Style/MutableConstant - Freeze mutable objects assigned to constants.

scripts/spec/cli_spec.rb

• [ ] :exclamation: - Line 38, Col 40 - Style/PercentLiteralDelimiters - %w-literals should be delimited by [ and ].
• [ ] :exclamation: - Line 38, Col 7 - Style/MethodCallWithArgsParentheses - Use parentheses for method calls with arguments.
• [ ] :exclamation: - Line 42, Col 40 - Style/PercentLiteralDelimiters - %w-literals should be delimited by [ and ].
• [ ] :exclamation: - Line 42, Col 7 - Style/MethodCallWithArgsParentheses - Use parentheses for method calls with arguments.

scripts/spec/productization_spec.rb

• [ ] :exclamation: - Line 18, Col 7 - Style/MethodCallWithArgsParentheses - Use parentheses for method calls with arguments.
• [ ] :exclamation: - Line 23, Col 7 - Style/MethodCallWithArgsParentheses - Use parentheses for method calls with arguments.

[simaishi]

Jansa backport details:

$ git log -1
commit df22f422a088062331caa36e0653a6353ddc343c
Author: Satoe Imaishi <simaishi@redhat.com>
Date:   Tue Oct 20 10:10:25 2020 -0400

    Merge pull request #446 from Fryguy/productize_build

    Allow for productization of build

    (cherry picked from commit 633eb44b90d05e04588af4f7387b513cba6199b8)