Upgrade Gradle to 7.2 and Android Gradle plugin to 4.2.

The older versions of the plugin caused problems building with newer
NDK versions due to a lack of MIPS support.

This also required upgrading to a version of Gradle that knows about
the Google Maven repository.

wa/workloads/androbench/uiauto/app/build.gradle

@@ -14,7 +14,7 @@ android {
     buildTypes {
         applicationVariants.all { variant ->
             variant.outputs.each { output ->
-                output.outputFile = file("$project.buildDir/apk/${packageName}.apk")
+                output.outputFileName = "${packageName}.apk"
             }
         }
     }

wa/workloads/androbench/uiauto/build.gradle

@@ -3,9 +3,10 @@
 buildscript {
     repositories {
         jcenter()
+        google()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.3.1'
+        classpath 'com.android.tools.build:gradle:4.2.0'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
@@ -15,6 +16,7 @@ buildscript {
 allprojects {
     repositories {
         jcenter()
+        google()
     }
 }
 

wa/workloads/androbench/uiauto/build.sh

@@ -47,8 +47,8 @@ fi
 # If successful move APK file to workload folder (overwrite previous)
 package=com.arm.wa.uiauto.androbench
 rm -f ../$package
-if [[ -f app/build/apk/$package.apk ]]; then
-    cp app/build/apk/$package.apk ../$package.apk
+if [[ -f app/build/outputs/apk/debug/$package.apk ]]; then
+    cp app/build/outputs/apk/debug/$package.apk ../$package.apk
 else
     echo 'ERROR: UiAutomator apk could not be found!'
     exit 9

wa/workloads/androbench/uiauto/gradle/wrapper/gradle-wrapper.properties

@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-3.3-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.2-all.zip