(CDAP-24) Update CDAP to release version of Twill (0.4.0-incubating) - Also remove the need of apache snapshot repo.
(CDAP-24) Update CDAP to release version of Twill (0.4.0-incubating)
- Also remove the need of apache snapshot repo.

anthcp/cdap,mpouttuclarke/cdap,mpouttuclarke/cdap,hsaputra/cdap,anthcp/cdap,caskdata/cdap,hsaputra/cdap,hsaputra/cdap,mpouttuclarke/cdap,anthcp/cdap,chtyim/cdap,chtyim/cdap,caskdata/cdap,chtyim/cdap,caskdata/cdap,chtyim/cdap,mpouttuclarke/cdap,chtyim/cdap,hsaputra/cdap,caskdata/cdap,hsaputra/cdap,caskdata/cdap,chtyim/cdap,anthcp/cdap,mpouttuclarke/cdap,caskdata/cdap,anthcp/cdap