Imports of prune-junit-xml command

PathSynopsis
encoding/xmlPackage xml implements a simple XML 1.0 parser that understands XML name spaces.
flagPackage flag implements command-line flag parsing.
fmtPackage fmt implements formatted I/O with functions analogous to C's printf and scanf.
ioPackage io provides basic interfaces to I/O primitives.
k8s.io/kubernetes/third_party/forked/gotestsum/junitxmlPackage junitxml creates a JUnit XML report from a testjson.Execution.
osPackage os provides a platform-independent interface to operating system functionality.