* master: (417 commits)
  percona-toolkit: update md5sum.
  version up eggs.
  version up : OpenLDAP 2.4.42.
  version up eggs.
  version up : cpio 2.12.
  version up : gettext 0.19.6.
  version up : libtasn1 4.6.
  monitor: Include working fluentd process on monitoring
  version up : FreeType 2.6.
  update eggs.
  perl: make post_make_hook script more robust.
  we no longer use mr.developer.
  use slapos.recipe.build:download instead of deprecated slapos.recipe.download.
  Monitor: Accept slaves on distributor software type
  monitor: Include skeleton of distributor software type
  vesion up eggs.
  fixup! slaprunner: version up eggs.
  fix a typo in url.
  version up : curl 7.44.0.
  version up eggs.
  ...

also add component/python-PyYAML because cliff 1.15.0 requires PyYAML.

  it includes working wendeling plugin

  Each slave can introduce test parameter to be tested.
  Each slave has a log dedicated folder.

envirionment+= seems not working here.

that is required by serf library, that is required by subversion.
it seems that in some environment this rpath is explicitly required.