Add kotlin dsl support

[devtribe]

This fixes issue #163

[Reamer]

Get the example working with

14:07 $ git diff
diff --git a/examples/single-module-kotlin-dsl-gradle/build.gradle.kts b/examples/single-module-kotlin-dsl-gradle/build.gradle.kts
index 194a3e5..78e105a 100644
--- a/examples/single-module-kotlin-dsl-gradle/build.gradle.kts
+++ b/examples/single-module-kotlin-dsl-gradle/build.gradle.kts
@@ -3,7 +3,7 @@ import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
 plugins {
     application
     kotlin("jvm") version "1.3.50"
-    id("org.sonarqube") version "2.6.2"
+    id("org.sonarqube") version "2.8"
     id("org.owasp.dependencycheck") version "5.2.2"
 }
 
@@ -31,9 +31,9 @@ dependencyCheck {
 
 sonarqube {
     properties {
-        property("sonar.dependencyCheck.reportPath", "build/reports/dependency-check-report.xml")
+        property("sonar.dependencyCheck.xmlReportPath", "build/reports/dependency-check-report.xml")
         property("sonar.dependencyCheck.htmlReportPath", "build/reports/dependency-check-report.html")
-        property("sonar.sources", "${properties["sonar.sources"].toString()},build.gradle.kts")
+        property("sonar.sources", "src,build.gradle.kts")
     }
 }

Can you run the example project without errors?

Without I get this error:

14:23 $ gradle sonarqube 

> Task :sonarqube FAILED
Invalid value of sonar.sources for single-module-kotlin-dsl-gradle

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':sonarqube'.
> The folder '[/home/philipp/git/dependency-check-sonar-plugin/examples/single-module-kotlin-dsl-gradle/src/main/kotlin]' does not exist for 'single-module-kotlin-dsl-gradle' (base directory = /home/philipp/git/dependency-check-sonar-plugin/examples/single-module-kotlin-dsl-gradle)

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

BUILD FAILED in 2s
2 actionable tasks: 1 executed, 1 up-to-date

[devtribe]

You're absolutely correct about your changes. Sorry for that, i just build it and don't check if the sonarqube tasks works. Thanks for your open Eye!