# Functions
AccessModesContainedInAll returns whether all of the requested modes are contained by modes.
AccessModesContains returns whether the requested mode is contained by modes.
CheckPersistentVolumeClaimModeBlock checks VolumeMode.
FindDNSIP looks up the cluster DNS service by label "coredns", falling back to "kube-dns" if not found.
GetPersistentVolumeClaimClass returns StorageClassName.
GetPersistentVolumeClass returns StorageClassName.
JoinHostPort joins a hostname and an optional port.
LookupHost looks up IP addresses of hostname on specified DNS server.
RoundUpSize calculates how many allocation units are needed to accommodate a volume of given size.
RoundUpToGiB rounds up given quantity upto chunks of GiB.
SplitHostPort split a string into host and port (port is optional).