Fix missing cloud config update in new network tests

[neddp]

When these tests run in isolation (e.g. with tag filtering), the director has no cloud config and all deployments fail with "Required property 'networks' was not specified".

[coderabbitai]

Walkthrough

This PR adds the base64 gem to the Gemfile and modifies system spec files. Two contexts in ipv6_network_configuration_spec.rb and one context in network_configuration_spec.rb now call @requirements.update_cloud_config(@SPEC) before deployment. Additionally, the inter-instance IPv6 ping command was changed from ping6 to sudo ping6 while keeping the same result-parsing logic.

Changes

File	Change Summary
Gemfile	Added gem 'base64' dependency
spec/system/ipv6_network_configuration_spec.rb	Added update_cloud_config(@SPEC) calls in two setup contexts; changed ping6 to sudo ping6
spec/system/network_configuration_spec.rb	Added update_cloud_config(@SPEC) call before capturing deployment in nic_groups context

Suggested reviewers: KauzClay, aramprice

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Title check	✅ Passed	The title accurately summarizes the main fix: restoring the missing cloud config update in the new network tests.
Description check	✅ Passed	The description matches the reported failure mode and is directly related to the test isolation/cloud config fix.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[Copilot]

Pull request overview

This PR makes the system network configuration specs resilient when run in isolation by ensuring the BOSH director has an up-to-date cloud config before attempting deployments (preventing failures like “Required property 'networks' was not specified”).

Changes:

• Call @requirements.update_cloud_config(@spec) before bosh deploy in network-related specs that deploy directly.
• Run ping6 via sudo during IPv6 inter-instance connectivity verification.
• Add base64 to the Gemfile.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
spec/system/network_configuration_spec.rb	Updates cloud config before deploying in the nic_groups context to avoid missing cloud config when tests run alone.
spec/system/ipv6_network_configuration_spec.rb	Updates cloud config before deploying in IPv6 contexts; uses sudo ping6 for connectivity checks.
Gemfile	Adds the base64 gem dependency.

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