fix: AppiumTestDistribution/appium-device-farm requires 'platformName'

[rock-tran]

Motivation/Description of the PR

• Description of this PR, which problem it solves

I'm trying to run tests with Appium + it's plugin DeviceFarm.
At the start, the plugin raises the error then I realize it requires the 'platformName' in the capabilities.
I know I may update such plugins ( include AppiumDashboard) but that key is used so many places.
Send duplicated capabilities is easier way to fix it.

• Resolves #issueId (if applicable).

Applicable helpers:

• Appium

Type of change

• 🔥 Breaking changes
• 🚀 New functionality
• [] 🐛 Bug fix
• 📋 Documentation changes/updates
• ♨️ Hot fix
• 🔨 Markdown files fix - not related to source code
• 💅 Polish code

Checklist:

• Tests have been added
• Documentation has been added (Run npm run docs)
• Lint checking (Run npm run lint)
• Local tests are passed (Run npm test)

[kobenguyent]

I guess this one just clone more key values, and won't break anything. Thanks @rock-tran