Prometheus monitoring for GitLab Pages

This starts of the prometheus monitoring for GitLab Pages, and resolves #42 Point to check: - Are the metric names good, keeping Prometheus' conventions in mind? - Golang, general style etc - Shouldn't I do some voodoo magic to import this in the library?

Prometheus monitoring for GitLab Pages
1e31fac9 · Z.J. van de Weg · bc4aa822 · bc4aa822 · bc4aa822 · bc4aa822
Commit 1e31fac9 authored 8 years ago by Z.J. van de Weg
--- a/vendor/golang.org/x/net/http2/h2demo/rootCA.srl
+++ b/vendor/golang.org/x/net/http2/h2demo/rootCA.srl
-E2CE26BF3285059C
--- a/vendor/golang.org/x/net/http2/h2demo/server.crt
+++ b/vendor/golang.org/x/net/http2/h2demo/server.crt
--- a/vendor/golang.org/x/net/http2/h2demo/server.key
+++ b/vendor/golang.org/x/net/http2/h2demo/server.key
--- a/vendor/golang.org/x/net/http2/h2i/README.md
+++ b/vendor/golang.org/x/net/http2/h2i/README.md
--- a/vendor/golang.org/x/net/http2/h2i/h2i.go
+++ b/vendor/golang.org/x/net/http2/h2i/h2i.go
--- a/vendor/golang.org/x/net/http2/headermap.go
+++ b/vendor/golang.org/x/net/http2/headermap.go
--- a/vendor/golang.org/x/net/http2/hpack/encode.go
+++ b/vendor/golang.org/x/net/http2/hpack/encode.go
--- a/vendor/golang.org/x/net/http2/hpack/hpack.go
+++ b/vendor/golang.org/x/net/http2/hpack/hpack.go
--- a/vendor/golang.org/x/net/http2/hpack/huffman.go
+++ b/vendor/golang.org/x/net/http2/hpack/huffman.go
--- a/vendor/golang.org/x/net/http2/http2.go
+++ b/vendor/golang.org/x/net/http2/http2.go
--- a/vendor/golang.org/x/net/http2/not_go16.go
+++ b/vendor/golang.org/x/net/http2/not_go16.go
--- a/vendor/golang.org/x/net/http2/not_go17.go
+++ b/vendor/golang.org/x/net/http2/not_go17.go
--- a/vendor/golang.org/x/net/http2/pipe.go
+++ b/vendor/golang.org/x/net/http2/pipe.go
--- a/vendor/golang.org/x/net/http2/server.go
+++ b/vendor/golang.org/x/net/http2/server.go
--- a/vendor/golang.org/x/net/http2/transport.go
+++ b/vendor/golang.org/x/net/http2/transport.go
--- a/vendor/golang.org/x/net/http2/write.go
+++ b/vendor/golang.org/x/net/http2/write.go
--- a/vendor/golang.org/x/net/lex/httplex/httplex.go
+++ b/vendor/golang.org/x/net/lex/httplex/httplex.go