issue-652: Updated the PR template, per the request of @rkoster.

[Justin-W]

See: #652 (comment)

Note: The new template content is similar to corresponding content within the Vsphere CPI's PR template.

Checklist:

Please check each of the boxes below for which you have completed the corresponding task:

• I have performed a self-review of my own code
• All unit tests pass locally (after my changes)
• Rubocop reports zero offenses (after my changes)

Please include below the summary portions of the output from the following 2 scripts:

pushd src/bosh_azure_cpi
  ./bin/test-unit
  ./bin/rubocop_check
popd

NOTE: Please see how to setup dev environment and run unit tests in docs/development.md.

Unit Test output:

972 examples, 0 failures
Coverage report generated for RSpec to /Users/justinw/go/src/github.com/cloudfoundry/bosh-azure-cpi-release/src/bosh_azure_cpi/coverage. 4182 / 4203 LOC (99.5%) covered.

Rubocop output:

184 files inspected, no offenses detected

Changelog

• Modified the project's PR template to improve the PR Checklist. See Increase unit test coverage to 100% #652 for details.

[rkoster]

LGTM

[rkoster]

Thanks! @Justin-W