[WIP] fix creation of /calico/host/*/workload/ directory.
[WIP] fix creation of /calico/host/*/workload/ directory.


Former-commit-id: aacc4a37981b1b8d91d726c32b99cd0445a25ede
tomdee/libcalico,projectcalico/libnetwork-plugin,plwhite/libcalico,projectcalico/libcalico,Symmetric/libcalico,alexhersh/libcalico,L-MA/libcalico,caseydavenport/libcalico,TrimBiggs/libcalico,TrimBiggs/libnetwork-plugin,insequent/libcalico,tomdee/libnetwork-plugin,robbrockbank/libcalico,djosborne/libcalico,TrimBiggs/libnetwork-plugin