CORDA-2361: Split samples into contracts and workflows (#4575)

samples/cordapp-configuration/workflows/build.gradle

@@ -0,0 +1,19 @@
+apply plugin: 'kotlin'
+apply plugin: 'idea'
+apply plugin: 'net.corda.plugins.cordapp'
+apply plugin: 'net.corda.plugins.cordformation'
+
+dependencies {
+    cordaCompile project(':core')
+}
+
+cordapp {
+    targetPlatformVersion corda_platform_version.toInteger()
+    minimumPlatformVersion 1
+    workflow {
+        name "Cordapp Configuration Sample"
+        versionId 1
+        vendor "R3"
+        licence "Open Source (Apache 2)"
+    }
+}

samples/cordapp-configuration/workflows/src/config.conf

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+someStringValue=hello world
+someIntValue=1
+nested: {
+   value: a string
+}

samples/cordapp-configuration/workflows/src/main/kotlin/net/corda/configsample/GetStringConfigFlow.kt

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+package net.corda.configsample
+
+import co.paralleluniverse.fibers.Suspendable
+import net.corda.core.contracts.CommandData
+import net.corda.core.contracts.Contract
+import net.corda.core.contracts.ContractState
+import net.corda.core.flows.FlowLogic
+import net.corda.core.flows.StartableByRPC
+import net.corda.core.identity.AbstractParty
+import net.corda.core.serialization.CordaSerializable
+import net.corda.core.transactions.LedgerTransaction
+import net.corda.core.utilities.ProgressTracker
+
+@StartableByRPC
+class GetStringConfigFlow(private val configKey: String) : FlowLogic<String>() {
+    object READING : ProgressTracker.Step("Reading config")
+    override val progressTracker = ProgressTracker(READING)
+
+    @Suspendable
+    override fun call(): String {
+        progressTracker.currentStep = READING
+        val config = serviceHub.getAppContext().config
+        return config.getString(configKey)
+    }
+}

samples/cordapp-configuration/workflows/src/main/resources/log4j2.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<Configuration status="INFO">
+    <Appenders>
+        <Console name="Console" target="SYSTEM_OUT">
+            <PatternLayout pattern="%d{HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n" />
+        </Console>
+    </Appenders>
+    <Loggers>
+        <Root level="info">
+            <AppenderRef ref="Console" />
+        </Root>
+    </Loggers>
+</Configuration>