Renamed `InvokeUpdateResources` to `InvokeUpdateAvailable`.
Renamed `InvokeUpdateResources` to `InvokeUpdateAvailable`.

Previous name was likely unintentional.

Review: https://reviews.apache.org/r/49314/

craimbert/mesos,asamerh4/mesos,andschwa/mesos,yuquanshan/customizedMesos,gsantovena/mesos,jpeach/mesos,chhsia0/mesos,kaysoky/mesos,yuquanshan/customizedMesos,abudnik/mesos,abudnik/mesos,verizonlabs/mesos,reneploetz/mesos,dforsyth/mesos,neilconway/mesos,kaysoky/mesos,verizonlabs/mesos,gsantovena/mesos,chhsia0/mesos,Aman-Jain-14/customizedMesos,Gilbert88/mesos,yuquanshan/customizedMesos,craimbert/mesos,asamerh4/mesos,zmalik/mesos,asamerh4/mesos,Gilbert88/mesos,reneploetz/mesos,neilconway/mesos,asamerh4/mesos,abudnik/mesos,Aman-Jain-14/customizedMesos,craimbert/mesos,kaysoky/mesos,jpeach/mesos,Aman-Jain-14/customizedMesos,chhsia0/mesos,zmalik/mesos,zmalik/mesos,yuquanshan/customizedMesos,neilconway/mesos,verizonlabs/mesos,abudnik/mesos,verizonlabs/mesos,neilconway/mesos,kaysoky/mesos,yuquanshan/customizedMesos,chhsia0/mesos,dforsyth/mesos,craimbert/mesos,Gilbert88/mesos,abudnik/mesos,Aman-Jain-14/customizedMesos,yuquanshan/customizedMesos,dforsyth/mesos,verizonlabs/mesos,chhsia0/mesos,abudnik/mesos,asamerh4/mesos,Gilbert88/mesos,andschwa/mesos,abudnik/mesos,reneploetz/mesos,gsantovena/mesos,asamerh4/mesos,zmalik/mesos,andschwa/mesos,jpeach/mesos,gsantovena/mesos,jpeach/mesos,zmalik/mesos,chhsia0/mesos,craimbert/mesos,reneploetz/mesos,andschwa/mesos,andschwa/mesos,craimbert/mesos,craimbert/mesos,neilconway/mesos,andschwa/mesos,chhsia0/mesos,gsantovena/mesos,gsantovena/mesos,Gilbert88/mesos,reneploetz/mesos,kaysoky/mesos,dforsyth/mesos,Gilbert88/mesos,jpeach/mesos,jpeach/mesos,neilconway/mesos,reneploetz/mesos,dforsyth/mesos,reneploetz/mesos,kaysoky/mesos,zmalik/mesos,Aman-Jain-14/customizedMesos,dforsyth/mesos,Gilbert88/mesos,Aman-Jain-14/customizedMesos,verizonlabs/mesos,Aman-Jain-14/customizedMesos,andschwa/mesos,dforsyth/mesos,kaysoky/mesos,verizonlabs/mesos,neilconway/mesos,jpeach/mesos,gsantovena/mesos,yuquanshan/customizedMesos,asamerh4/mesos,zmalik/mesos