Sidecar processes require a different MCF_HOME setting than webapps and agents process

Sidecar processes were moved directly under the dist directory in 0.4-incubating. Unfortunately this means that the sidecar process scripts, which use the environment variable MCF_HOME, require a different MCF_HOME than the main processes and web apps. MCF_HOME is defined by these to be the location of properties.xml.

The fix for the ticket is to modify the sidecar process scripts to use the same definition for MCF_HOME.