Add E2E tests for the spring sample

[alexander-alderman-webb]

📜 Description

#skip-changelog

Follow up on #4635, with similar changes as the spring sample is analogous to the spring-jakarta sample.

One notable difference is that the Spring Boot 2's BOM pulls in Kotlin and Jackson versions that are incompatible with the ones specified in our version catalogue. I therefore included Kotlin and Jackson BOMs after the Spring Boot one. As a nice side effect spotlessGradleApply started working again on the sample.

💡 Motivation and Context

• Closes Add E2E tests for Spring #4609

💚 How did you test it?

📝 Checklist

• I added tests to verify the changes.
• No new PII added or SDK only sends newly added PII if sendDefaultPII is enabled.
• I updated the docs if needed.
• I updated the wizard if needed.
• Review from the native team if needed.
• No breaking change or entry added to the changelog.
• No breaking change for hybrid SDKs or communicated to hybrid SDKs.

🔮 Next steps

[github-actions]

Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	417.21 ms	475.94 ms	58.73 ms
Size	1.58 MiB	2.10 MiB	533.43 KiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
ee747ae	405.43 ms	485.70 ms	80.28 ms
3699cd5	423.60 ms	495.52 ms	71.92 ms
ee747ae	400.46 ms	423.61 ms	23.15 ms
ee747ae	554.98 ms	611.50 ms	56.52 ms
ee747ae	374.71 ms	455.18 ms	80.47 ms
ee747ae	382.73 ms	435.41 ms	52.68 ms
ee747ae	396.82 ms	441.67 ms	44.86 ms
ee747ae	358.21 ms	389.41 ms	31.20 ms
7314dbe	437.83 ms	505.64 ms	67.81 ms
ee747ae	415.92 ms	470.15 ms	54.23 ms

App size

Revision	Plain	With Sentry	Diff
ee747ae	1.58 MiB	2.10 MiB	530.95 KiB
3699cd5	1.58 MiB	2.10 MiB	533.45 KiB
ee747ae	1.58 MiB	2.10 MiB	530.95 KiB
ee747ae	1.58 MiB	2.10 MiB	530.95 KiB
ee747ae	1.58 MiB	2.10 MiB	530.95 KiB
ee747ae	1.58 MiB	2.10 MiB	530.95 KiB
ee747ae	1.58 MiB	2.10 MiB	530.95 KiB
ee747ae	1.58 MiB	2.10 MiB	530.95 KiB
7314dbe	1.58 MiB	2.10 MiB	533.45 KiB
ee747ae	1.58 MiB	2.10 MiB	530.95 KiB

Previous results on branch: webb/e2e_tests_spring

Startup times

Revision	Plain	With Sentry	Diff
c1fc233	357.19 ms	399.57 ms	42.39 ms
a5aaad8	426.89 ms	461.90 ms	35.00 ms

App size

Revision	Plain	With Sentry	Diff
c1fc233	1.58 MiB	2.10 MiB	533.46 KiB
a5aaad8	1.58 MiB	2.10 MiB	530.95 KiB

[adinauer]

Mostly LGTM, can we keep JDK 8? I'm worried that we start breaking things for customers who might still be on an old version of JDK.

[adinauer]

Could we implement the tests and still keep JDK 8?

[alexander-alderman-webb]

Yes, I agree. I had to change the Gradle of the system-test-support package. Is the package only internal?