Do not fetch allthethings.json if already on disk

Author: armenzg

tox.ini

@@ -30,7 +30,7 @@ deps =
 
 
 commands =
-    wget -N --random-wait https://secure.pub.build.mozilla.org/builddata/reports/allthethings/allthethings.20170612034501._332d994a305d_4cfcc98e2584_66760f869a2e.json
+    wget --no-clobber --random-wait https://secure.pub.build.mozilla.org/builddata/reports/allthethings/allthethings.20170612034501._332d994a305d_4cfcc98e2584_66760f869a2e.json
     cp allthethings.20170612034501._332d994a305d_4cfcc98e2584_66760f869a2e.json test/fixtures/allthethings.json
     flake8 mozci test
     coverage run --source=mozci -m py.test test
@@ -41,7 +41,7 @@ deps =
 
 
 commands =
-    wget -N --random-wait https://secure.pub.build.mozilla.org/builddata/reports/allthethings/allthethings.20170612034501._332d994a305d_4cfcc98e2584_66760f869a2e.json
+    wget --no-clobber --random-wait https://secure.pub.build.mozilla.org/builddata/reports/allthethings/allthethings.20170612034501._332d994a305d_4cfcc98e2584_66760f869a2e.json
     cp allthethings.20170612034501._332d994a305d_4cfcc98e2584_66760f869a2e.json test/fixtures/allthethings.json
     flake8 mozci test
     coverage run --source=mozci -m py.test test