org.csstudio.pvmanager.feature: creating feature for pvmanager core
o.c.u.pvmanager.feature: filling link
o.c.pvmanager.ca.feature: adding feature for Channel Access.
UM: using common pvmanager features
o.c.pvmanager.ca.feature: pvmanager feature should be a dependency
o.c.pvmanager.pva.feature: adding pvacces feature