configured spring-boot-data-jpa and added flyway for migrations

[woutslakhorst]

Having a persistent DB helps in setting up a local network/test network, production network. Hell.... all networks

Fixes #15

Signed-off-by: Wout Slakhorst wout.slakhorst@nedap.com

[woutslakhorst]

@stevenvegt Is it a hard requirement that approved certificate requests remain stored (for now). Since I changed logic so it deletes requests.

[codecov[bot]]

Codecov Report

Merging #25 into master will increase coverage by 0.33%. The diff coverage is 84.97%.

Impacted Files	Coverage Δ	Complexity Δ
...ain/kotlin/nl/nuts/discovery/api/CertificateApi.kt	83.33% <100%> (+0.47%)	7 <0> (ø)	:arrow_down:
src/main/kotlin/nl/nuts/discovery/NutsDiscovery.kt	60% <100%> (ø)	3 <0> (ø)	:arrow_down:
.../nuts/discovery/store/entity/CertificateRequest.kt	100% <100%> (ø)	5 <5> (?)
...c/main/kotlin/nl/nuts/discovery/api/Certificate.kt	100% <100%> (ø)	6 <6> (?)
...c/main/kotlin/nl/nuts/discovery/api/SignRequest.kt	72.22% <100%> (ø)	6 <1> (?)
...iscovery/service/SimpleNetworkParametersService.kt	89.47% <50%> (-4.28%)	8 <0> (ø)
...in/nl/nuts/discovery/store/CustomNodeRepository.kt	62.5% <62.5%> (ø)	3 <3> (?)
...main/kotlin/nl/nuts/discovery/api/NetworkMapApi.kt	69.23% <75%> (-0.22%)	10 <3> (ø)
...main/kotlin/nl/nuts/discovery/store/entity/Node.kt	78.57% <78.57%> (ø)	8 <8> (?)
...kotlin/nl/nuts/discovery/store/entity/Signature.kt	80% <80%> (ø)	2 <2> (?)
... and 12 more