chore(release): 7.0.3

[jamesdaniels]

• Deploy server default is bundleDependencies: true, correct this when generating the functions package.json
• onMessage callback should fire in the ng zone
• Auth was wrapping exports it wasn't suppose to
• Don't fail the deploy if there isn't an index.html file
• Lazifying the sample
• Cleaning up user-agent reporting
• Marking the samples as autogenerated, to reduce noise
• Committing the firebase/rxfire/base.ts files for easier readability
• Version and changelog entry
• Test cleanup and get storage emulator working