add check for EnvFromPath to be empty for continuation (#1145)
add check for EnvFromPath to be empty for continuation (#1145)

The pod mutation checks to see if there are any env variables
that have vault keys in them, if there are no env variables it
continues on and doesn't mutate the pod.  This fix also checks if
the EnvFromPath annotation is empty
banzaicloud/bank-vaults,banzaicloud/bank-vaults