* [Android] Fix build problem of apache release. (#1491)

Author: YorkShen

android/sdk/build.gradle

@@ -85,12 +85,12 @@ android {
     if(project.hasProperty('asfRelease')){
         //download so file if not exist, when compile in source release
         download{
-            src 'https://git-wip-us.apache.org/repos/asf?p=incubator-weex.git;a=blob_plain;f=android/sdk/libs/armeabi/libweexcore.so;hb=refs/heads/master'
+            src 'https://gitbox.apache.org/repos/asf?p=incubator-weex.git;a=blob_plain;f=android/sdk/libs/armeabi/libweexcore.so;hb=refs/heads/master'
             dest "${projectDir}/libs/armeabi/libweexcore.so"
             overwrite false
         }
         download{
-            src 'https://git-wip-us.apache.org/repos/asf?p=incubator-weex.git;a=blob_plain;f=android/sdk/libs/x86/libweexcore.so;hb=refs/heads/master'
+            src 'https://gitbox.apache.org/repos/asf?p=incubator-weex.git;a=blob_plain;f=android/sdk/libs/x86/libweexcore.so;hb=refs/heads/master'
             dest "${projectDir}/libs/x86/libweexcore.so"
             overwrite false
         }

scripts/build_from_source.sh

@@ -41,7 +41,7 @@ cp dist/weex-polyfill.min.js pre-build/weex-polyfill.js
 cp dist/weex-rax.min.js pre-build/weex-rax-api.js
 cp dist/weex-rax.min.js android_sdk/assets/weex-rax-api.js
 
-gradle wrapper --gradle-version 3.3
+gradle wrapper --gradle-version 4.4
 echo 'include ":android_sdk"'>settings.gradle
 ./gradlew :android_sdk:assemble -PasfRelease
 

scripts/generate_apache_release.sh

@@ -37,3 +37,4 @@ $SED_CMD -i '' 's/\.\.\/\.\.\/pre-build/\.\.\/pre-build/g' $dest/android_sdk/bui
 mv $dest/android/build.gradle $dest/build.gradle
 rm -rf $dest/android $dest/ios
 
+rm -rf $dest/android_sdk/gradle