Android: copy build.gradle to install folder.

Task-number: QTCREATORBUG-13311
Change-Id: I4c91164ae1fc593397bb46f98fbc49ef1569da39
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@theqtcompany.com>

src/android/templates/templates.pro

@@ -2,6 +2,7 @@ CONFIG -= qt android_install
 
 templates.files = \
     $$PWD/AndroidManifest.xml \
+    $$PWD/build.gradle \
     $$PWD/res
 
 templates.path = $$[QT_INSTALL_PREFIX]/src/android/templates
@@ -17,5 +18,6 @@ INSTALLS += templates
 
     QMAKE_POST_LINK += \
         $${QMAKE_COPY} $$shell_path($$PWD/AndroidManifest.xml) $$OUT_PATH $$RETURN \
+        $${QMAKE_COPY} $$shell_path($$PWD/build.gradle) $$OUT_PATH $$RETURN \
         $${QMAKE_COPY_DIR} $$shell_path($$PWD/res) $$OUT_PATH
 }