Putting renaming task back in afterEvaluate (#2120)

### Summary
Putting the task configuring logic to rename the msal AAR file back in
afterEvaluate. It's needed for our maven release pipeline, though I'm
not quite sure why this logic is specifically needed in MSAL and not
common.

Author: melissaahn

msal/build.gradle

@@ -306,6 +306,18 @@ task pmd(type: Pmd) {
 }
 
 afterEvaluate {
+    // Gradle 6.1.1 and Android Gradle Plugin 4.0.1 doesn't rename the file (see 'outputFileName' above)
+    // Adding this work around to have the file properly renamed.
+    tasks.named("assembleDistRelease").configure {
+        def buildFile = file("$buildDir/outputs/aar/${archivesBaseName}-dist-release.aar")
+        print "Build file $buildFile"
+        doLast {
+            println "Renaming build file $buildFile to '$buildDir${File.separator}outputs${File.separator}aar${File.separator}${archivesBaseName}-${version}.aar'"
+            if (!buildFile.renameTo("$buildDir${File.separator}outputs${File.separator}aar${File.separator}${archivesBaseName}-${version}.aar")) {
+                println "Rename failed!"
+            }
+        }
+    }
     publishing {
         publications {
             msal(MavenPublication) {