Update CHANGELOG file bringing 0.9.0 in sync with JIRA.
Update CHANGELOG file bringing 0.9.0 in sync with JIRA.

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