Add vexor.timeout and vexor.read_timeout keys

* fixed specs, add insecure_private_key
version bump
notify if default timeouts changed
big mistake: in matrix, in configurations, only first configuration has valid attributes, next may be broken
version bump
export more vars
typo in Rakefile
export JOB_NUMBER and BUILD_NUMBER
version bump
Merge branch 'master' into bebanjo

* master:
  version bump
  export JOB_NUMBER and BUILD_NUMBER
  typo in Rakefile
  export more vars
  version bump
  big mistake: in matrix, in configurations, only first configuration has valid attributes, next may be broken
  notify if default timeouts changed
  version bump
  Add vexor.timeout and vexor.read_timeout keys

Conflicts:
	lib/vx/builder/matrix_builder.rb
	spec/lib/builder/matrix_builder_spec.rb