remove schemaInfo from Analysis

it is part of tableInfo anyway.
updated changelog according to 0.45.4 release
randomize ports for benchmark and integrations tests
limit number of threads created on client
fix flaky tests
use parallel test execution on travis
travis: set ulimit
updated crate-admin to 0.10.1
mention Debian packages in documentation
fix: support alter number_of_shards
do not consider rootfs in sys.nodes.fs['data']['dev']
forbid altering `column_policy` on a single partition
Merge pull request #1353 from crate/m/ignore_rootfs

do not consider rootfs in sys.nodes.fs['data']['dev']
remove lastEmittedDocPerShard logic from QueryThenFetchTask

was always null / unused
forbid using ``alter table add column`` on a single partition.
update elasticsearch to 1.4.0
fixed bulk shard processor
fixed thread leaks in client