Merge ~sylvain-pineau/checkbox-ng:c3url_envar into checkbox-ng:master

[Sylvain Pineau]

Provide a way to modify the C3 url submission endpoint via this env variable.

[Sheila Miguez (codersquid)]

lgtm

review: Approve

diff --git a/checkbox_ng/launcher/stages.py b/checkbox_ng/launcher/stages.py
index 62633b2..380c22b 100644
--- a/checkbox_ng/launcher/stages.py
+++ b/checkbox_ng/launcher/stages.py
@@ -415,6 +415,9 @@ class ReportsStage(CheckboxUiStage):
             if self.sa.config.transports[transport].get('staging', False):
                 url = ('https://certification.staging.canonical.com/'
                        'api/v1/submission/{}/'.format(secure_id))
+            elif os.getenv('C3_URL'):
+                url = (
+                    '{}/{}/'.format(os.getenv('C3_URL'), ctx.args.secure_id))
             else:
                 url = ('https://certification.canonical.com/'
                        'api/v1/submission/{}/'.format(secure_id))
diff --git a/checkbox_ng/launcher/subcommands.py b/checkbox_ng/launcher/subcommands.py
index 0432cdb..8c61c5d 100644
--- a/checkbox_ng/launcher/subcommands.py
+++ b/checkbox_ng/launcher/subcommands.py
@@ -105,6 +105,8 @@ class Submit():
         if ctx.args.staging:
             url = ('https://certification.staging.canonical.com/'
                    'api/v1/submission/{}/'.format(ctx.args.secure_id))
+        elif os.getenv('C3_URL'):
+            url = ('{}/{}/'.format(os.getenv('C3_URL'), ctx.args.secure_id))
         from checkbox_ng.certification import SubmissionServiceTransport
         transport_cls = SubmissionServiceTransport
         transport = transport_cls(url, options_string)