build/base: add missing {target} to copy mngids.py
build/base: add missing {target} to copy mngids.py

Before that, the mngids.py was never copied from eDeploy/build directory
but from eDeploy server.

redhat-cip/edeploy,redhat-cip/edeploy,redhat-cip/edeploy,enovance/edeploy,lebauce/edeploy,enovance/edeploy,lebauce/edeploy,enovance/edeploy,enovance/edeploy,redhat-cip/edeploy,lebauce/edeploy,lebauce/edeploy