make core a fat jar without external dependencies

core/build.gradle

@@ -18,6 +18,9 @@
  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  * DEALINGS IN THE SOFTWARE.
  */
+plugins {
+    id 'com.github.johnrengelman.shadow' version '1.2.3'
+}
 
 apply from: "$buildScriptsDir/common-java.gradle"
 apply from: "$buildScriptsDir/publishing.gradle"
@@ -43,6 +46,19 @@ dependencies {
     testCompile group: 'com.google.code.gson', name: 'gson', version: '1.7.2'
 }
 
+shadowJar {
+    classifier=''
+    relocate 'org.apache.http', 'com.microsoft.applicationinsights.core.dependencies.http'
+    relocate 'eu.infomas.annotation', 'com.microsoft.applicationinsights.core.dependencies.annotation'
+    relocate 'org.apache.commons', 'com.microsoft.applicationinsights.core.dependencies.apachecommons'
+    relocate 'com.google.common', 'com.microsoft.applicationinsights.core.dependencies.googlecommon '
+}
+
+jar {
+    dependsOn shadowJar
+    enabled = false
+}
+
 def sdkVersionFileDir = "$project.buildDir/src/generated/main/resources"
 task generateVersionProperties(type: PropsFileGen) {
     targetFile = new File(sdkVersionFileDir, "sdk-version.properties")