Refactor vmware_customizerequest method for VM Provisioning.

[pkomanek]

Method refactoring and creating tests.

This PR is based on the issue below.
ManageIQ/manageiq#12038

@miq-bot add_label refactoring
@miq-bot assign @tinaafitz

[coveralls]

Pull Request Test Coverage Report for Build 4261

• 94 of 94 (100.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.07%) to 97.532%

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Totals
Change from base Build 4224:	0.07%
Covered Lines:	3201
Relevant Lines:	3282

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💛 - Coveralls

[miq-bot]

Some comments on commits pkomanek/manageiq-content@7a5407a~...461ab89

content/automate/ManageIQ/Infrastructure/VM/Provisioning/StateMachines/Methods.class/methods/vmware_customizerequest.rb

• 💣 💥 🔥 🚒 - 33 - Detected cfme
• 💣 💥 🔥 🚒 - 49 - Detected cfme

spec/content/automate/ManageIQ/Infrastructure/VM/Provisioning/StateMachines/Methods.class/methods/vmware_customizerequest_spec.rb

• ⚠️ - 171 - Detected allow_any_instance_of. This RSpec method is highly discouraged, please only use when absolutely necessary.

[miq-bot]

Checked commits pkomanek/manageiq-content@7a5407a~...461ab89 with ruby 2.5.7, rubocop 0.69.0, haml-lint 0.20.0, and yamllint
2 files checked, 1 offense detected

content/automate/ManageIQ/Infrastructure/VM/Provisioning/StateMachines/Methods.class/methods/vmware_customizerequest.rb

• ❗ - Line 90, Col 19 - Style/RescueModifier - Avoid using rescue in its modifier form.