如何在 L上use release key

[DESCRIPTION]

在L上，CTS有个测试项testPackageSignatures，该测试项会使用google default key里check
是否使用的是google default key，如果是，则会test fail。
因此要使用和google default不一样的key。release key不仅可以满足CTS request，还可以满足工
信部CATR TAF spec。

[SOLUTION]

1，Genernate the release key
–development/tools/make_key releasekey
'/C=CN/ST=BeiJing/L=HaiDian/O=MediaTek/OU=WCD/CN=demo/emailAddress=demo@me
diatek.com'

2, Genernate the platform /media/shared key，the method as follows：
Generate platform keys：
development/tools/make_key platform
'/C=CN/ST=BeiJing/L=HaiDian/O=MediaTek/OU=WCD/CN=demo/emailAddress=demo@mediatek.com'
Generate media keys
development/tools/make_key media
'/C=CN/ST=BeiJing/L=HaiDian/O=MediaTek/OU=WCD/CN=demo/emailAddress=demo@mediatek.com'
Generate shared keys
development/tools/make_key shared
'/C=CN/ST=BeiJing/L=HaiDian/O=MediaTek/OU=WCD/CN=demo/emailAddress=demo@mediatek.com'
3, get the test key fROMbuild/target/product/security/
4, Move testkey.pk8, testkey.x509.pem,releasekey.pk8, releasekey.x509.pem, media.pk8,
media.x509.pem, platform.pk8, platform.x509.pem, shared.pk8 and shared.x509.pem to
device/mediatek/common/security/${Project}
5, Set mtk_SIGNATURE_CUSTOMIZATION = yes and MTK_INTERNAL = no in the ProjectConfig.mk.
6, Start a normal build, and the binary-released APK will be signed automatical