NDS-952: No default tag causes API Server to crash (#213)
NDS-952: No default tag causes API Server to crash (#213)

* NDS-952: Fix API server assumptions when no image tag is given

* Learning golang basics

craig-willis/ndslabs,bodom0015/ndslabs,bodom0015/ndslabs,craig-willis/ndslabs,bodom0015/ndslabs,nds-org/ndslabs,craig-willis/ndslabs,craig-willis/ndslabs,bodom0015/ndslabs