Support seperate JVM/classpath for Corda-Spring integration tests

[manosbatsis]

Not sure about the best way to go on this but more or less

• Provided local or remote cordapp Gradle module(s)
• Prepare a Corda network e.g. by using
  • a folder equivalent to a node's cordapps folder + node driver + application.properties for node configs
  • a nodes folder created by deployNodes + node driver or runnodes + optionally application.properties for node config overrides
  • containers e.g. docker(-compose) or testcontainers instead of deployNodes/node driver
• Create and start/stop the Corda network around Spring Boot integration tests via Gradle plugin/task or JUnit extension/rule whatever

[manosbatsis]

Done in https://manosbatsis.github.io/corda-testacles/testcontainers/