[wrt] Update pack and case script for android suites

Impacted  Suites:wrt-extension-android-tests,wrt-packagemnt-android-tests,wrt-sharemode-android-tests
Impacted tests(approved): new 0, update 13, delete 0
Unit test platform: [Android]
Unit test result summary: pass 13, fail 0, block 0
comment:In the wrt auto suites as mentioned above,all the 13 cases passed.
And in manual suites, test process is ok with inst.sh and testkit-lite