Imports of package preflight

PathSynopsis
bufioPackage bufio implements buffered I/O. It wraps an io.Reader or io.Writer object, creating another object (Reader or Writer) that also implements the interface but provides buffering and some help for textual I/O.
bytesPackage bytes implements functions for the manipulation of byte slices.
crypto/tlsPackage tls partially implements TLS 1.2, as specified in RFC 5246, and TLS 1.3, as specified in RFC 8446.
crypto/x509Package x509 implements a subset of the X.509 standard.
encoding/jsonPackage json implements encoding and decoding of JSON as defined in RFC 7159.
fmtPackage fmt implements formatted I/O with functions analogous to C's printf and scanf.
github.com/pkg/errorsPackage errors provides simple error handling primitives.
ioPackage io provides basic interfaces to I/O primitives.
k8s.io/api/core/v1Package v1 is the v1 version of the core API.
k8s.io/apimachinery/pkg/util/net
k8s.io/apimachinery/pkg/util/setsPackage sets has generic set and specified sets.
k8s.io/apimachinery/pkg/util/validation
k8s.io/apimachinery/pkg/util/versionPackage version provides utilities for version number comparisons
k8s.io/component-base/version
k8s.io/klog/v2Package klog contains the following functionality:
k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadmPackage kubeadm is the package that contains the libraries that drive the kubeadm binary.
k8s.io/kubernetes/cmd/kubeadm/app/constants
k8s.io/kubernetes/cmd/kubeadm/app/images
k8s.io/kubernetes/cmd/kubeadm/app/util/initsystem
k8s.io/kubernetes/cmd/kubeadm/app/util/runtimePackage runtime provides the kubeadm container runtime implementation.
k8s.io/system-validators/validators
k8s.io/utils/execPackage exec provides an injectable interface and implementations for running commands.
k8s.io/utils/net
netPackage net provides a portable interface for network I/O, including TCP/IP, UDP, domain name resolution, and Unix domain sockets.
net/httpPackage http provides HTTP client and server implementations.
net/urlPackage url parses URLs and implements query escaping.
osPackage os provides a platform-independent interface to operating system functionality.
path/filepathPackage filepath implements utility routines for manipulating filename paths in a way compatible with the target operating system-defined file paths.
regexpPackage regexp implements regular expression search.
runtimePackage runtime contains operations that interact with Go's runtime system, such as functions to control goroutines.
stringsPackage strings implements simple functions to manipulate UTF-8 encoded strings.
timePackage time provides functionality for measuring and displaying time.