Imports of package networking

PathSynopsis
github.com/docker/docker/internal/lazyregexpPackage lazyregexp is a thin wrapper over regexp, allowing the use of global regexp variables without forcing them to be compiled at init.
github.com/docker/docker/testutil/daemonPackage daemon launches dockerd for testing purposes.
gotest.tools/v3/assertPackage assert provides assertions for comparing expected values to actual values in tests.
gotest.tools/v3/icmdPackage icmd executes binaries and provides convenient assertions for testing the results.
gotest.tools/v3/pollPackage poll provides tools for testing asynchronous code.
os/execPackage exec runs external commands.
stringsPackage strings implements simple functions to manipulate UTF-8 encoded strings.
testingPackage testing provides support for automated testing of Go packages.