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	403.86 ms	466.20 ms	62.34 ms
Size	1.58 MiB	2.10 MiB	532.31 KiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
7314dbe	437.83 ms	505.64 ms	67.81 ms
17a0955	372.53 ms	446.70 ms	74.17 ms
85d7417	347.21 ms	394.35 ms	47.15 ms
ee747ae	357.79 ms	421.84 ms	64.05 ms
ee747ae	358.21 ms	389.41 ms	31.20 ms
ee747ae	396.82 ms	441.67 ms	44.86 ms
ee747ae	400.46 ms	423.61 ms	23.15 ms
b750b96	408.98 ms	480.32 ms	71.34 ms
c8125f3	397.65 ms	485.14 ms	87.49 ms
3699cd5	423.60 ms	495.52 ms	71.92 ms

App size

Revision	Plain	With Sentry	Diff
7314dbe	1.58 MiB	2.10 MiB	533.45 KiB
17a0955	1.58 MiB	2.10 MiB	533.20 KiB
85d7417	1.58 MiB	2.10 MiB	533.44 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
b750b96	1.58 MiB	2.10 MiB	533.19 KiB
c8125f3	1.58 MiB	2.10 MiB	532.32 KiB
3699cd5	1.58 MiB	2.10 MiB	533.45 KiB

Previous results on branch: webb/e2e_tests_spring

Startup times

Revision	Plain	With Sentry	Diff
a5aaad8	426.89 ms	461.90 ms	35.00 ms
2b2b647	390.83 ms	431.83 ms	41.00 ms
5d1948a	417.21 ms	475.94 ms	58.73 ms
c1fc233	357.19 ms	399.57 ms	42.39 ms

App size

Revision	Plain	With Sentry	Diff
a5aaad8	1.58 MiB	2.10 MiB	530.95 KiB
2b2b647	1.58 MiB	2.10 MiB	532.32 KiB
5d1948a	1.58 MiB	2.10 MiB	533.43 KiB
c1fc233	1.58 MiB	2.10 MiB	533.46 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.

[lcian]

Looks good, thanks!