Add cli to bosh cpi and vsphere_cpi binary
Add integration test for vsphere cpi cli

Signed-off-by: Maria Shaldibina <mariash@pivotallabs.com>
[bosh_vsphere_cpi] Use database from config

Signed-off-by: Maria Shaldibina <mariash@pivotallabs.com>
[bosh_vsphere_cpi] Pass director uuid in request context

Signed-off-by: Maria Shaldibina <mariash@pivotallabs.com>
Read from STDIN in vsphere cpi cli

Signed-off-by: Maria Shaldibina <mariash@pivotallabs.com>