install: Move apt-get update into setup-apt-repo.

scripts/lib/install

@@ -15,9 +15,9 @@ DEPLOYMENT_TYPE="${DEPLOYMENT_TYPE:-voyager}"
 PUPPET_CLASSES="${PUPPET_CLASSES:-zulip::voyager}"
 VIRTUALENV_NEEDED="${VIRTUALENV_NEEDED:-yes}"
 
+# setup-apt-repo does an `apt-get update`
 /root/zulip/scripts/lib/setup-apt-repo
 
-apt-get update
 apt-get -y dist-upgrade $APT_OPTIONS
 apt-get install -y puppet git python python-six crudini $ADDITIONAL_PACKAGES
 

scripts/lib/setup-apt-repo

@@ -20,3 +20,5 @@ else
     echo "Unsupported release $release."
     exit 1
 fi
+
+apt-get update

tools/provision.py

@@ -123,8 +123,8 @@ def main():
     # project.
     os.chdir(ZULIP_PATH)
 
+    # setup-apt-repo does an `apt-get update`
     run(["sudo", "./scripts/lib/setup-apt-repo"])
-    run(["sudo", "apt-get", "update"])
     run(["sudo", "apt-get", "-y", "install", "--no-install-recommends"] + APT_DEPENDENCIES[codename])
 
     if TRAVIS: