Voltha-Lib-GO circular dependency

The "PONResourceManager" struct has a pointer to "TechProfileMgr":

type PONResourceManager struct {
   ...
   TechProfileMgr   tp.TechProfileIf // create object of *tp.TechProfileMgr
   ...
}

which has a pointer back to "PONResourceManager":

type TechProfileMgr struct {
   ...
   resourceMgr       iPonResourceMgr
   ...
}

This is achieve via interfaces, thus is not preventing the code from building correctly, but it should probably be avoided if possible.