[Android] Exit with error code when the make apk test cases failed.
[Android] Exit with error code when the make apk test cases failed.

Because the trybot requests exit code for main page to check
whether PR passes the make apk test cases. Currently,
the make_apk_test.py only display the error info, but always exit
with 0 even if it failed. So the main page of trybot will always show
tests passed.

Add a function to check the make_apk_test.py's result, and exit
with correct code according to this result.

amaniak/crosswalk,crosswalk-project/crosswalk-efl,siovene/crosswalk,leonhsl/crosswalk,stonegithubs/crosswalk,lincsoon/crosswalk,axinging/crosswalk,axinging/crosswalk,crosswalk-project/crosswalk,pk-sam/crosswalk,Pluto-tv/crosswalk,qjia7/crosswalk,jondwillis/crosswalk,hgl888/crosswalk,chuan9/crosswalk,ZhengXinCN/crosswalk,tomatell/crosswalk,hgl888/crosswalk,shaochangbin/crosswalk,siovene/crosswalk,jondong/crosswalk,ZhengXinCN/crosswalk,tedshroyer/crosswalk,jpike88/crosswalk,darktears/crosswalk,myroot/crosswalk,lincsoon/crosswalk,axinging/crosswalk,myroot/crosswalk,hgl888/crosswalk,huningxin/crosswalk,lincsoon/crosswalk,alex-zhang/crosswalk,stonegithubs/crosswalk,baleboy/crosswalk,huningxin/crosswalk,crosswalk-project/crosswalk,marcuspridham/crosswalk,darktears/crosswalk,myroot/crosswalk,crosswalk-project/crosswalk,xzhan96/crosswalk,fujunwei/crosswalk,zeropool/crosswalk,jpike88/crosswalk,hgl888/crosswalk-efl,dreamsxin/crosswalk,fujunwei/crosswalk,chuan9/crosswalk,jondong/crosswalk,stonegithubs/crosswalk,xzhan96/crosswalk,siovene/crosswalk,fujunwei/crosswalk,dreamsxin/crosswalk,tomatell/crosswalk,zliang7/crosswalk,minggangw/crosswalk,crosswalk-project/crosswalk-efl,RafuCater/crosswalk,minggangw/crosswalk,tomatell/crosswalk,tomatell/crosswalk,chuan9/crosswalk,huningxin/crosswalk,DonnaWuDongxia/crosswalk,hgl888/crosswalk-efl,minggangw/crosswalk,Bysmyyr/crosswalk,ZhengXinCN/crosswalk,amaniak/crosswalk,DonnaWuDongxia/crosswalk,baleboy/crosswalk,hgl888/crosswalk-efl,DonnaWuDongxia/crosswalk,shaochangbin/crosswalk,XiaosongWei/crosswalk,hgl888/crosswalk,alex-zhang/crosswalk,baleboy/crosswalk,leonhsl/crosswalk,jondong/crosswalk,pk-sam/crosswalk,xzhan96/crosswalk,jpike88/crosswalk,axinging/crosswalk,rakuco/crosswalk,xzhan96/crosswalk,Pluto-tv/crosswalk,leonhsl/crosswalk,XiaosongWei/crosswalk,xzhan96/crosswalk,jondwillis/crosswalk,tedshroyer/crosswalk,Pluto-tv/crosswalk,Pluto-tv/crosswalk,RafuCater/crosswalk,Bysmyyr/crosswalk,zeropool/crosswalk,weiyirong/crosswalk-1,stonegithubs/crosswalk,stonegithubs/crosswalk,huningxin/crosswalk,Bysmyyr/crosswalk,jondong/crosswalk,RafuCater/crosswalk,PeterWangIntel/crosswalk,amaniak/crosswalk,XiaosongWei/crosswalk,shaochangbin/crosswalk,crosswalk-project/crosswalk,tedshroyer/crosswalk,alex-zhang/crosswalk,Bysmyyr/crosswalk,Pluto-tv/crosswalk,rakuco/crosswalk,RafuCater/crosswalk,stonegithubs/crosswalk,jpike88/crosswalk,weiyirong/crosswalk-1,dreamsxin/crosswalk,heke123/crosswalk,shaochangbin/crosswalk,PeterWangIntel/crosswalk,leonhsl/crosswalk,siovene/crosswalk,myroot/crosswalk,TheDirtyCalvinist/spacewalk,minggangw/crosswalk,stonegithubs/crosswalk,bestwpw/crosswalk,PeterWangIntel/crosswalk,crosswalk-project/crosswalk-efl,lincsoon/crosswalk,zeropool/crosswalk,heke123/crosswalk,jondwillis/crosswalk,fujunwei/crosswalk,crosswalk-project/crosswalk-efl,chuan9/crosswalk,baleboy/crosswalk,axinging/crosswalk,bestwpw/crosswalk,xzhan96/crosswalk,amaniak/crosswalk,mrunalk/crosswalk,PeterWangIntel/crosswalk,alex-zhang/crosswalk,fujunwei/crosswalk,mrunalk/crosswalk,DonnaWuDongxia/crosswalk,crosswalk-project/crosswalk,hgl888/crosswalk-efl,alex-zhang/crosswalk,axinging/crosswalk,DonnaWuDongxia/crosswalk,siovene/crosswalk,tedshroyer/crosswalk,hgl888/crosswalk,tomatell/crosswalk,huningxin/crosswalk,dreamsxin/crosswalk,darktears/crosswalk,hgl888/crosswalk-efl,chuan9/crosswalk,leonhsl/crosswalk,heke123/crosswalk,mrunalk/crosswalk,zliang7/crosswalk,bestwpw/crosswalk,leonhsl/crosswalk,hgl888/crosswalk,darktears/crosswalk,bestwpw/crosswalk,mrunalk/crosswalk,minggangw/crosswalk,tedshroyer/crosswalk,jondwillis/crosswalk,shaochangbin/crosswalk,hgl888/crosswalk-efl,xzhan96/crosswalk,pk-sam/crosswalk,zliang7/crosswalk,Bysmyyr/crosswalk,darktears/crosswalk,rakuco/crosswalk,marcuspridham/crosswalk,weiyirong/crosswalk-1,darktears/crosswalk,crosswalk-project/crosswalk,marcuspridham/crosswalk,hgl888/crosswalk,minggangw/crosswalk,heke123/crosswalk,xzhan96/crosswalk,DonnaWuDongxia/crosswalk,alex-zhang/crosswalk,chinakids/crosswalk,qjia7/crosswalk,rakuco/crosswalk,alex-zhang/crosswalk,baleboy/crosswalk,lincsoon/crosswalk,RafuCater/crosswalk,baleboy/crosswalk,tomatell/crosswalk,heke123/crosswalk,heke123/crosswalk,zeropool/crosswalk,huningxin/crosswalk,rakuco/crosswalk,TheDirtyCalvinist/spacewalk,rakuco/crosswalk,zeropool/crosswalk,darktears/crosswalk,chuan9/crosswalk,fujunwei/crosswalk,jondong/crosswalk,Bysmyyr/crosswalk,pk-sam/crosswalk,qjia7/crosswalk,tedshroyer/crosswalk,dreamsxin/crosswalk,zeropool/crosswalk,bestwpw/crosswalk,XiaosongWei/crosswalk,crosswalk-project/crosswalk-efl,shaochangbin/crosswalk,XiaosongWei/crosswalk,pk-sam/crosswalk,crosswalk-project/crosswalk-efl,rakuco/crosswalk,heke123/crosswalk,jondwillis/crosswalk,TheDirtyCalvinist/spacewalk,qjia7/crosswalk,jondong/crosswalk,XiaosongWei/crosswalk,bestwpw/crosswalk,ZhengXinCN/crosswalk,jpike88/crosswalk,chinakids/crosswalk,amaniak/crosswalk,PeterWangIntel/crosswalk,lincsoon/crosswalk,siovene/crosswalk,jpike88/crosswalk,weiyirong/crosswalk-1,baleboy/crosswalk,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