fix build

Author: robertroeser

client/build.gradle

@@ -6,7 +6,7 @@ sourceCompatibility = 1.8
 targetCompatibility = 1.8
 
 dependencies {
-    protobuf project (':protobuf-rpc')
+    protobuf project (':core-idl')
     protobuf project (':broker-info-idl')
 
     compile project (':core')

protobuf-rpc/build.gradle

@@ -23,7 +23,7 @@ dependencies {
     compileOnly 'com.google.protobuf:protobuf-java-util:3.5.0'
 
     testCompile project(':core')
-    testCompile project(':core-idl')
+    testProtobuf project(':core-idl')
     testCompile 'junit:junit:4.12'
 }