salt-minion started via upstart is not using /etc/environment to
source variables therefore is not using system wide http_proxy parameters if
they are set there. With this patch if salt.minion.env_vars is set to engine:
file salt will set envvars in /etc/default/salt-minion and will use them for
all commands executed remotely via salt. Since /etc/default is not used on
systems with systemd override for salt-minion to use /etc/environmnet will be
set.

Change-Id: Icfe122de2486a83820a0bd2e2aeea4be3796c6aa
Closes-bug: PROD-16676

Change-Id: I3ddfb01dd785f559e4bbf197bc164b8d0389a4f1

Change-Id: If8ee6ccfd282d8f926eff268cd74871e0f400754

It adds oauth package to 'dependency_pkgs' and
'dependency_pkgs_pip' sections to have it installed
by system package manager or by pip.

Change-Id: I2e799c92c6e6f7c0705bb962ac32b8c166723af1

Change-Id: I1d09c5297440a6469cfaabbfc67d1f1c11decece

Change-Id: Id84434f5e0b699a00d0165a3e2318f4ad54f530d

Allows handling of large output (default 1mb, now 100mb)

Change-Id: Ic5c09155a14003747696c9974b19d21896bf881c

Change-Id: I73a4a14734651f6483fae169a2290e9c5b377d76

Change-Id: I6f1292779858c45f9cf6f4caf3657ee000b2cf06

Change-Id: I2b8ee84718e10d6261f1c93ca02ff4b60977e37f

Change-Id: I1e1269268a81d8cd01b5fe9328f63e8bf85e941b

Change-Id: I2aba1213b1dda46aee929b8ea583c41316e3eb0b

source:engine metadata created - defaults to pkg
installation, pip installation alternative added