Install oauth package

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

salt/map.jinja

   - python-psutil
   - python-yaml
   - python-msgpack
+  - python-oauth
   dependency_pkgs_pip:
   - PyYAML
   - M2Crypto
   - psutil
+  - oauth
   cert_pkgs:
   - ca-certificates
 Gentoo:
   - m2crypto
   - psutils
   - PyYAML
+  - python-oauth
   dependency_pkgs_pip:
   - PyYAML
   - M2Crypto
   - psutil
+  - oauth
   cert_pkgs:
   - ca-certificates
 {%- endload %}