docs auto install deps
removed commented code
rpc thread - commit inside try clause
path to requirements
Merge pull request #1418 from Mirantis/docs-deps

Path to requirements in nailgun-docs job
Function for caching (creating snapshots) virtual machines
Update tests so that they use snapshots
New functions _get_remote_for_node, _get_remote and get_cluster_block_devices
Functions to get node's disks and notifications
Test for disk sizes
Send bootstrap logs to logstash as well

Assume logstash node is fuel:55514, udp

Signed-off-by: Bogdan Dobrelya <bogdando@mail.ru>
Fuel submodule from bogdando fork with feat_logstash merged

Signed-off-by: Bogdan Dobrelya <bogdando@mail.ru>
Add rpm reqs for Logstash, Elasticsearch, Kibana and deps

For: #OSCI-553

Signed-off-by: Bogdan Dobrelya <bogdando@mail.ru>