adding outline pkg to correct branch
Ansible Ubuntu Trusty installer
fixing up big data dependencies
postinst installs servers automatically, bigdata role in ansible, installs hortonworks
swp32s0 facing server in br0 on both leaf1+2
initial bigdata server role, configures interfaces
restart switches upon pkg install
Ansible hortonworks bigdata server config

Ticket: CE-233
Testing Done: passed smoke testing in chapter 4 against local containers.

Configured through end of chapter 3 (hdfs and yarn).

Reference:
http://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.1.5/bk_installing_manually_book/bk_installing_manually_book-20140829.pdfkkkjjjkkk
/etc/hosts entries force hadoop bind to data net

Ticket: CE-233
Testing Done: manually implemented. hdfs and yarn see both nodes.

Was running into an issue using server1 as the primary node name, because
that resolves to 127.0.0.1 in server1's /etc/hosts; services were only
listening on loopback on that node, so server2 couldn't reach server1.
split bigdata server roles with init scripts to start services

Ticket: CE-233

Details:
    - renamed bigdata role to bigdata-common
    - added -master and -slave roles
    - added init script template for all services
    - enable and start all services
    - initialize jobhistory storage
    - create client user and initialize storage
Remove Ansible specific Trusty installer due to CE-424
Merge pull request #36 from CumulusNetworks/bigdata

Bigdata automation by @trapier