Make CoreDNS a server type plugin for Caddy (#220)

* Make CoreDNS a server type plugin for Caddy

Remove code we don't need and port all middleware over. Fix all tests
and rework the documentation.

Also make `go generate` build a caddy binary which we then copy into
our directory. This means `go build`-builds remain working as-is.

And new etc instances in each etcd test for better isolation.
Fix more tests and rework test.Server with the newer support Caddy offers.

Fix Makefile to support new mode of operation.

1 files changed, 0 insertions, 32 deletions

diff --git a/core/parse/parse.go b/core/parse/parse.go
deleted file mode 100644
index faef36c28..000000000
--- a/core/parse/parse.go
+++ /dev/null
@@ -1,32 +0,0 @@
-// Package parse provides facilities for parsing configuration files.
-package parse
-
-import "io"
-
-// ServerBlocks parses the input just enough to organize tokens,
-// in order, by server block. No further parsing is performed.
-// If checkDirectives is true, only valid directives will be allowed
-// otherwise we consider it a parse error. Server blocks are returned
-// in the order in which they appear.
-func ServerBlocks(filename string, input io.Reader, checkDirectives bool) ([]ServerBlock, error) {
-	p := parser{Dispenser: NewDispenser(filename, input)}
-	p.checkDirectives = checkDirectives
-	blocks, err := p.parseAll()
-	return blocks, err
-}
-
-// allTokens lexes the entire input, but does not parse it.
-// It returns all the tokens from the input, unstructured
-// and in order.
-func allTokens(input io.Reader) (tokens []token) {
-	l := new(lexer)
-	l.load(input)
-	for l.next() {
-		tokens = append(tokens, l.token)
-	}
-	return
-}
-
-// ValidDirectives is a set of directives that are valid (unordered). Populated
-// by config package's init function.
-var ValidDirectives = make(map[string]struct{})