Add a flag to exclude process args
Add config flag normalization for exclude_process_args
Fix detection of Elasticsearch version for Beta and RC releases

The check assumes that the version is returned in semver x.y.z format, but
Elasticsearch has a nasty habit of having x.y.z.STRING to denote beta releases
Update the memcache service check name to match others.
Merge pull request #1169 from vend/bugfix-elasticsearch-version

Fix detection of Elasticsearch version for Beta and RC releases
Merge pull request #1160 from DataDog/leo/psflag

Add a flag to exclude process args
Keep previous datadog.conf on install_agent.sh, fix #1177
Use v2.0.11
Merge pull request #1178 from takus/hotfix/cassandra-version

Update cassandra version