Bug 1175934 part 1: Copy blobfree zip to public upload dir.

If we ./build.sh blobfree, move the zip file to public upload
dir.

Also, we don't need a blobfree specific config file anymore.

testing/mozharness/configs/b2g/taskcluster-phone-blobfree.py

@@ -1,31 +0,0 @@
-#!/usr/bin/env python
-config = {
-    "default_vcs": "tc-vcs",
-    "default_actions": [
-        'checkout-sources',
-        'build',
-        'build-symbols',
-        'prep-upload'
-    ],
-    "upload": {
-        "default": {
-            "upload_dep_target_exclusions": []
-        }
-    },
-    "env": {
-        "GAIA_OPTIMIZE": "1",
-        "WGET_OPTS": "-c -q"
-    },
-    "build_targets": ["blobfree"],
-    "is_automation": True,
-    "repo_remote_mappings": {
-        'https://android.googlesource.com/': 'https://git.mozilla.org/external/aosp',
-        'git://codeaurora.org/': 'https://git.mozilla.org/external/caf',
-        'https://git.mozilla.org/b2g': 'https://git.mozilla.org/b2g',
-        'git://github.com/mozilla-b2g/': 'https://git.mozilla.org/b2g',
-        'git://github.com/mozilla/': 'https://git.mozilla.org/b2g',
-        'https://git.mozilla.org/releases': 'https://git.mozilla.org/releases',
-        'http://android.git.linaro.org/git-ro/': 'https://git.mozilla.org/external/linaro',
-        'git://github.com/apitrace/': 'https://git.mozilla.org/external/apitrace',
-    },
-}

testing/mozharness/scripts/b2g_build.py

@@ -711,6 +711,18 @@ class B2GBuild(LocalesMixin, PurgeMixin,
                 if base_pattern in public_upload_patterns:
                     public_files.append(f)
 
+        device_name = self.config['target'].split('-')[0]
+        blobfree_zip = os.path.join(
+                        dirs['work_dir'],
+                        'out',
+                        'target',
+                        'product',
+                        device_name,
+                        device_name + '.blobfree-dist.zip')
+
+        if os.path.exists(blobfree_zip):
+            public_files.append(blobfree_zip)
+
         for base_f in files + public_files:
             f = base_f
             if f.endswith(".img"):