Resynced helpers

charm-helpers-sync.yaml

@@ -1,4 +1,4 @@
-branch: lp:charm-helpers
+branch: lp:~openstack-charmers/charm-helpers/icehouse
 destination: hooks/charmhelpers
 include:
     - core

hooks/charmhelpers/fetch/__init__.py

@@ -97,6 +97,29 @@ def apt_install(packages, options=None, fatal=False):
         subprocess.call(cmd, env=env)
 
 
+def apt_upgrade(options=None, fatal=False, dist=False):
+    """Upgrade all packages"""
+    if options is None:
+        options = ['--option=Dpkg::Options::=--force-confold']
+
+    cmd = ['apt-get', '--assume-yes']
+    cmd.extend(options)
+    if dist:
+        cmd.append('dist-upgrade')
+    else:
+        cmd.append('upgrade')
+    log("Upgrading with options: {}".format(options))
+
+    env = os.environ.copy()
+    if 'DEBIAN_FRONTEND' not in env:
+        env['DEBIAN_FRONTEND'] = 'noninteractive'
+
+    if fatal:
+        subprocess.check_call(cmd, env=env)
+    else:
+        subprocess.call(cmd, env=env)
+
+
 def apt_update(fatal=False):
     """Update local apt cache"""
     cmd = ['apt-get', 'update']