From time to time in the gate we suffer from Kubernetes/Docker bug [1].
As it seems to still be open, we can work it around by removing usage of
subPath property of volumeMounts attached to Kuryr pods and this commit
does so. Besides that it removes possibility of providing different
kuryr.conf for kuryr-controller and kuryr-daemon as this shouldn't be
required as we don't support running without kuryr-daemon anymore.
[1] https://github.com/kubernetes/kubernetes/issues/68211
Closes-Bug: 1833228
Change-Id: I2465bc45324482cc4ab32a1367ab08f34ce28b1c
5290e52cd5