chore: Datastore sample test debug

[zhumin8]

This PR is for temp debug use. Not intend to merge.

Setup for datastore sample for native compile.
With native profile, build success. Get runtime error:

2023-05-15T15:30:37.017-04:00  WARN 72295 --- [           main] w.s.c.ServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'bookController': Unsatisfied dependency expressed through constructor parameter 0: No qualifying bean of type 'com.example.BookRepository' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {}
2023-05-15T15:30:37.019-04:00 ERROR 72295 --- [           main] o.s.b.d.LoggingFailureAnalysisReporter   : 

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APPLICATION FAILED TO START
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Description:

Parameter 0 of constructor in com.example.BookController required a bean of type 'com.example.BookRepository' that could not be found.


Action:

Consider defining a bean of type 'com.example.BookRepository' in your configuration

Then Try use tracing agent:

• Comment out @EnabledIfSystemProperty(named = "it.datastore", matches = "true") from test
• Confirm gcloud auth project w/ appropriate settings- set it with application.properties to by-pass project-id issue with cloud-top.
• runmvn verify -DargLine="-agentlib:native-image-agent=config-output-dir=src/main/resources/META-INF/native-image"

Get Build error

Fatal error: java.lang.NullPointerException: Cannot invoke "jdk.vm.ci.meta.JavaField.format(String)" because "field" is null

Apply workaround, build success

Get first runtime error again.

Parameter 0 of constructor in com.example.BookController required a bean of type 'com.example.BookRepository' that could not be found.