Resync charm-helpers

Avoid use of 'service --status-all' which is currently
broken on trusty for upstart managed daemons; the change
moves to detecting how the daemon is managed, and then
using upstart status XXX or the return code of service XXX
status to determine whether a process is running.

Fixes for IPv6 network address detection under Ubuntu
16.04 which changes the output format of the ip commands
slightly.

Update the version map to include 8.1.x as a Neutron
version for Mitaka.

Change-Id: Ic565bf17f13315c9511636c7ee9ede560c37e91f
Closes-Bug: 1581171
Closes-Bug: 1581598
Closes-Bug: 1580674

hooks/charmhelpers/contrib/network/ip.py

@@ -214,7 +214,16 @@ def format_ipv6_addr(address):
 
 def get_iface_addr(iface='eth0', inet_type='AF_INET', inc_aliases=False,
                    fatal=True, exc_list=None):
-    """Return the assigned IP address for a given interface, if any."""
+    """Return the assigned IP address for a given interface, if any.
+
+    :param iface: network interface on which address(es) are expected to
+                  be found.
+    :param inet_type: inet address family
+    :param inc_aliases: include alias interfaces in search
+    :param fatal: if True, raise exception if address not found
+    :param exc_list: list of addresses to ignore
+    :return: list of ip addresses
+    """
     # Extract nic if passed /dev/ethX
     if '/' in iface:
         iface = iface.split('/')[-1]
@@ -315,6 +324,14 @@ def get_ipv6_addr(iface=None, inc_aliases=False, fatal=True, exc_list=None,
     We currently only support scope global IPv6 addresses i.e. non-temporary
     addresses. If no global IPv6 address is found, return the first one found
     in the ipv6 address list.
+
+    :param iface: network interface on which ipv6 address(es) are expected to
+                  be found.
+    :param inc_aliases: include alias interfaces in search
+    :param fatal: if True, raise exception if address not found
+    :param exc_list: list of addresses to ignore
+    :param dynamic_only: only recognise dynamic addresses
+    :return: list of ipv6 addresses
     """
     addresses = get_iface_addr(iface=iface, inet_type='AF_INET6',
                                inc_aliases=inc_aliases, fatal=fatal,
@@ -336,7 +353,7 @@ def get_ipv6_addr(iface=None, inc_aliases=False, fatal=True, exc_list=None,
             cmd = ['ip', 'addr', 'show', iface]
             out = subprocess.check_output(cmd).decode('UTF-8')
             if dynamic_only:
-                key = re.compile("inet6 (.+)/[0-9]+ scope global dynamic.*")
+                key = re.compile("inet6 (.+)/[0-9]+ scope global.* dynamic.*")
             else:
                 key = re.compile("inet6 (.+)/[0-9]+ scope global.*")
 

hooks/charmhelpers/core/host.py

@@ -128,11 +128,8 @@ def service(action, service_name):
     return subprocess.call(cmd) == 0
 
 
-def systemv_services_running():
-    output = subprocess.check_output(
-        ['service', '--status-all'],
-        stderr=subprocess.STDOUT).decode('UTF-8')
-    return [row.split()[-1] for row in output.split('\n') if '[ + ]' in row]
+_UPSTART_CONF = "/etc/init/{}.conf"
+_INIT_D_CONF = "/etc/init.d/{}"
 
 
 def service_running(service_name):
@@ -140,26 +137,22 @@ def service_running(service_name):
     if init_is_systemd():
         return service('is-active', service_name)
     else:
-        try:
-            output = subprocess.check_output(
-                ['service', service_name, 'status'],
-                stderr=subprocess.STDOUT).decode('UTF-8')
-        except subprocess.CalledProcessError:
-            return False
-        else:
-            # This works for upstart scripts where the 'service' command
-            # returns a consistent string to represent running 'start/running'
-            if ("start/running" in output or "is running" in output or
-                    "up and running" in output):
-                return True
-            # Actively check for upstart stopped message(s) as the fall through
-            # SystemV check can return false positives
-            if ("stop/waiting" in output):
+        if os.path.exists(_UPSTART_CONF.format(service_name)):
+            try:
+                output = subprocess.check_output(
+                    ['status', service_name],
+                    stderr=subprocess.STDOUT).decode('UTF-8')
+            except subprocess.CalledProcessError:
                 return False
+            else:
+                # This works for upstart scripts where the 'service' command
+                # returns a consistent string to represent running 'start/running'
+                if "start/running" in output:
+                    return True
+        elif os.path.exists(_INIT_D_CONF.format(service_name)):
             # Check System V scripts init script return codes
-            if service_name in systemv_services_running():
-                return True
-            return False
+            return service('status', service_name)
+        return False
 
 
 def service_available(service_name):