SMACK-388 register PingProvider with smack.providers. The static register code was removed with 13406 (http://fisheye.igniterealtime.org/changelog/smack?cs=13406)
SMACK-388 register PingProvider with smack.providers. The static register code was removed with 13406 (http://fisheye.igniterealtime.org/changelog/smack?cs=13406)

git-svn-id: 0d4d1bf2e47502aa0f0957c230a0ec7fa56198fd@13413 b35dd754-fafc-0310-a699-88a17e54d16e

lovely3x/Smack,mar-v-in/Smack,Tibo-lg/Smack,TTalkIM/Smack,hy9902/Smack,esl/Smack,Flowdalic/Smack,deeringc/Smack,vanitasvitae/smack-omemo,annovanvliet/Smack,ishan1604/Smack,mar-v-in/Smack,cjpx00008/Smack,unisontech/Smack,andrey42/Smack,chuangWu/Smack,TTalkIM/Smack,ayne/Smack,magnetsystems/message-smack,lovely3x/Smack,xuIcream/Smack,vanitasvitae/Smack,magnetsystems/message-smack,qingsong-xu/Smack,vito-c/Smack,opg7371/Smack,esl/Smack,kkroid/OnechatSmack,opg7371/Smack,u20024804/Smack,Tibo-lg/Smack,igniterealtime/Smack,hy9902/Smack,vito-c/Smack,kkroid/OnechatSmack,cjpx00008/Smack,vanitasvitae/Smack,esl/Smack,igorexax3mal/Smack,ishan1604/Smack,unisontech/Smack,xuIcream/Smack,hy9902/Smack,ayne/Smack,qingsong-xu/Smack,cjpx00008/Smack,ayne/Smack,u20024804/Smack,u20024804/Smack,Flowdalic/Smack,mar-v-in/Smack,andrey42/Smack,kkroid/OnechatSmack,opg7371/Smack,vanitasvitae/smack-omemo,qingsong-xu/Smack,deeringc/Smack,unisontech/Smack,igorexax3mal/Smack,xuIcream/Smack,chuangWu/Smack,igniterealtime/Smack,igniterealtime/Smack,vanitasvitae/smack-omemo,igorexax3mal/Smack,deeringc/Smack,Tibo-lg/Smack,annovanvliet/Smack,dpr-odoo/Smack,annovanvliet/Smack,TTalkIM/Smack,chuangWu/Smack,dpr-odoo/Smack,ishan1604/Smack,lovely3x/Smack,andrey42/Smack,Flowdalic/Smack,vanitasvitae/Smack,dpr-odoo/Smack,magnetsystems/message-smack