Updated netty-http and common to release versions 0.7.0 and 0.1.0 respectively.
Exclude unneeded common dependencies from cdap-security.
Exclude cdap-security from other than coopr-server modules.
Added cdap-security exclusion for specific type.
Merge pull request #831 from cybervisiontech/issue/fix-snapshots-dependencies

Updated netty-http and common to release versions 0.7.0 and 0.1.0 respectively.