jni: Upgrade underlying NFD to version 0.6.2-11-gd657d53

This change replaces in-project JNI compilation of ndn-cxx and NFD with
packaged versions of ndn-cxx and NFD using a customized
android-crew-staging (https://github.com/named-data-mobile/android-crew-staging).
Refer to README-dev.md for more detail.

This commit also drops Logcat views

Refs: #4661

Change-Id: Id981689475d9da3aea63bea38d925f335c25b46e
diff --git a/.jenkins.d/10-get-sdk.sh b/.jenkins.d/10-get-sdk.sh
index 2780c32..8d02423 100755
--- a/.jenkins.d/10-get-sdk.sh
+++ b/.jenkins.d/10-get-sdk.sh
@@ -14,7 +14,7 @@
 export PATH=${PATH}:${ANDROID_HOME}/tools/bin:${ANDROID_HOME}/platform-tools
 
 echo "y" | sdkmanager "platform-tools"
-sdkmanager "platforms;android-26" "build-tools;26.0.3"
+sdkmanager "platforms;android-28"
 
 cd ..