upgraded gradle to 4.4 and Android Plugin for Gradle 3.1.2

Author: vtrifonov

test-app/app/build.gradle

@@ -68,7 +68,7 @@ def nativescriptDependencies = new JsonSlurper().parseText(dependenciesJson.text
 def computeCompileSdkVersion = { -> project.hasProperty("compileSdk") ? compileSdk : 26 }
 def computeTargetSdkVersion = { -> project.hasProperty("targetSdk") ? targetSdk : 26 }
 def computeBuildToolsVersion = { ->
-    project.hasProperty("buildToolsVersion") ? buildToolsVersion : "27.0.1"
+    project.hasProperty("buildToolsVersion") ? buildToolsVersion : "27.0.3"
 }
 
 project.ext.selectedBuildType = project.hasProperty("release") ? "release" : "debug"

test-app/build-tools/android-metadata-generator/build.gradle

@@ -17,7 +17,7 @@ buildscript {
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.0.1'
+        classpath 'com.android.tools.build:gradle:3.1.2'
     }
 }
 

test-app/build-tools/static-binding-generator/build.gradle

@@ -15,7 +15,7 @@ compileJava {
 }
 
 task copyJarToBuildTools (type: Copy) {
-    inputs.dir("$projectDir/build/libs/static-binding-generator.jar")
+    inputs.file("$projectDir/build/libs/static-binding-generator.jar")
     from "$projectDir/build/libs/static-binding-generator.jar"
     into "$projectDir/../"
 }

test-app/build.gradle

@@ -1,13 +1,13 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 
 buildscript {
-    
+
     repositories {
         jcenter()
         google()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.0.1'
+        classpath 'com.android.tools.build:gradle:3.1.2'
     }
 }
 

test-app/gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
-#Mon Sep 18 14:23:16 EEST 2017
+#Fri May 11 16:45:47 EEST 2018
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip

test-app/runtime/build.gradle

@@ -15,7 +15,7 @@ if (onlyX86) {
     println "OnlyX86 build triggered."
 }
 
-project.ext._buildToolsVersion = "27.0.1"
+project.ext._buildToolsVersion = "27.0.3"
 
 android {
     sourceSets {