[baremetal] Add upstream (lab) proxy support

If upstream proxy is defined in IDF, propagate it to pillar data:
- linux:system:proxy:keyserver:http(s) for cfg01, mas01;
- maas:region:upstream_proxy for mas01;

Sample IDF config:

idf:
  fuel:
    network:
      upstream_proxy:
        address: 10.0.2.2
        port: 3128

JIRA: FUEL-317

Change-Id: I12be815e1b4564227fb09c20ce06cd71e7d433b6
Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>

0 files changed, 0 insertions, 0 deletions