Ruby2.1

To support GitLab we need current Ruby oldstable, which is Ruby 2.1.6.

Rationale: https://gitlab.com/gitlab-org/gitlab-ce/commit/757df0142f521380b92d28a721a7fd2bd8aa382f

/cc @kazuhiko

See merge request !5

Current Ruby stable is 2.2.2, but current GitLab does not work with it,
and requires current Ruby oldstable, which is 2.1.6:

    https://gitlab.com/gitlab-org/gitlab-ce/commit/757df0142f521380b92d28a721a7fd2bd8aa382f

/cc @kazuhiko

In the next patch we'll add another version of Ruby, and it will make
sense to share common configuration for Ruby compiling.

/cc @kazuhiko

Like with e.g. python or readline, or like with versioned programs e.g.
on Debian, put version into name without dash. So

    ruby-2.2 -> ruby2.2

/cc @kazuhiko

to avoid possible symbol lookup error, like "libreadline.so.6: undefined symbol: UP".

A new recipe deploy a python HTTPServer which is used to share files between all vm in the cluster
the url is something like: https:IPv6:port/HASH-PATH/FILES
Access to root https:IPv6:port/ is forbiden.

Merge branch 'master' of https://lab.nexedi.cn/nexedi/slapos

* 'master' of https://lab.nexedi.cn/nexedi/slapos:
  openssl: Allow it to be build with make -jN   N > 1
  openssl: Convert patches to -p1

component/openssl: Fix build for make -j

Fix parallel build for openssl - out of the box it in parallel mode openssl build ~ 2 times faster, and with tuned cache and other setting ~ 3 times faster.

Please apply and thanks beforehand,
Kirill

/cc @kazuhiko

See merge request !3

Added:
server-alias
disable-no-cache-request
prefer-gzip-encoding-to-backend
disabled-cookie-list

For builds to be reproducible, we pin versions for used eggs and
buildout extensions, but 30d43f03 (use slapos.extension.strip to strip
binaries at the end of buildout process.) forgot to do this.

/cc @kazuhiko

There is a story for OpenSSL build to be broken for `make -j`. Gentoo-
and various other people proposed fixes, at least from 2008, but for
some reasons (patch does not work with BSD make, upstream forgot to
apply, etc) they are not applied to main codebase.

What we can do is to "cherry-pick" the patch from Gentoo to speed-up
OpenSSL build. On a typical 8-cores i7 node, with the following test
buildout:

    [buildout]
    extends =
      slapos/stack/slapos.cfg
      slapos/component/openssl/buildout.cfg

after full build

                    time (rm -rf parts/openssl && ./bin/buildout install openssl)

    MAKEFLAGS=-j1   1m48s
    MAKEFLAGS=-j8   0m53s

and the timing does not subtract time to e.g. download the package from
network, so the building speedup itself is even more.

/cc @kazuhiko

We'll soon need to apply/ship external patches for openssl with us, and
external patches and patches in general usually go in -p1 format.

Since patch-options is "global" - i.e. it affects all patches for
slapos.recipe.cmmi, this change is needed for us to keep
downloaded-from-somewhere patches as unmodified as possible.

/cc @kazuhiko

In 2d7e6179 (wendelin.core: Add part/recipe how to build it from git
repository) I've added wendelin.core-dev part, but forgot to set :egg
variable inside it.

Reviewed-by: Trust-me