Enable gradle test code coverage for the library modules that aren't affected by 'stuck in endless loop' issue

'library-core' is still affected by https://code.google.com/p/android/issues/detail?id=226070

Code coverage report can be generated for the rest of the modules by:
./gradlew :[module name]:createDebugCoverageReport
Report is generated under:
[module folder]/buildout/reports/coverage/debug

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=151448536

library/core/build.gradle

@@ -23,6 +23,12 @@ android {
         consumerProguardFiles 'proguard-rules.txt'
     }
 
+    sourceSets {
+        androidTest {
+            java.srcDirs += "../../testutils/src/main/java/"
+        }
+    }
+
     buildTypes {
         // Re-enable test coverage when the following issue is fixed:
         // https://code.google.com/p/android/issues/detail?id=226070
@@ -30,12 +36,6 @@ android {
         //     testCoverageEnabled = true
         // }
     }
-
-    sourceSets {
-        androidTest {
-            java.srcDirs += "../../testutils/src/main/java/"
-        }
-    }
 }
 
 dependencies {

library/dash/build.gradle

@@ -27,6 +27,12 @@ android {
             java.srcDirs += "../../testutils/src/main/java/"
         }
     }
+
+    buildTypes {
+        debug {
+            testCoverageEnabled = true
+        }
+    }
 }
 
 dependencies {

library/hls/build.gradle

@@ -21,6 +21,12 @@ android {
         minSdkVersion project.ext.minSdkVersion
         targetSdkVersion project.ext.targetSdkVersion
     }
+
+    buildTypes {
+        debug {
+            testCoverageEnabled = true
+        }
+    }
 }
 
 dependencies {

library/smoothstreaming/build.gradle

@@ -27,6 +27,12 @@ android {
             java.srcDirs += "../../testutils/src/main/java/"
         }
     }
+
+    buildTypes {
+        debug {
+            testCoverageEnabled = true
+        }
+    }
 }
 
 dependencies {

library/ui/build.gradle

@@ -21,6 +21,12 @@ android {
         minSdkVersion project.ext.minSdkVersion
         targetSdkVersion project.ext.targetSdkVersion
     }
+
+    buildTypes {
+        debug {
+            testCoverageEnabled = true
+        }
+    }
 }
 
 dependencies {