Raise hacking version to 2.0.0

We've kept hacking capped for a long time now. This raises the hacking
package version to the latest release and fixes the issues that it
found.

Change-Id: Ib13a3fe3f1a103b5e24a7c5bb7838ffdae2bf198
Signed-off-by: Sean McGinnis <sean.mcginnis@gmail.com>

lower-constraints.txt

@@ -19,7 +19,7 @@ fixtures==3.0.0
 flake8==2.5.5
 future==0.16.0
 greenlet==0.4.10
-hacking==0.12.0
+hacking==2.0.0
 idna==2.6
 imagesize==0.7.1
 iso8601==0.1.11

os_brick/initiator/connectors/disco.py

@@ -157,19 +157,19 @@ class DISCOConnector(base.BaseLinuxConnector):
                                       client_port,
                                       socket.AF_UNSPEC,
                                       socket.SOCK_STREAM):
-                aff, socktype, proto, canonname, saa = res
-                try:
-                    sock = socket.socket(aff, socktype, proto)
-                except socket.error:
-                    sock = None
-                    continue
-                try:
-                    sock.connect(saa)
-                except socket.error:
-                    sock.close()
-                    sock = None
-                    continue
-                break
+            aff, socktype, proto, canonname, saa = res
+            try:
+                sock = socket.socket(aff, socktype, proto)
+            except socket.error:
+                sock = None
+                continue
+            try:
+                sock.connect(saa)
+            except socket.error:
+                sock.close()
+                sock = None
+                continue
+            break
 
         if sock is None:
             LOG.error("Cannot connect TCP socket")

os_brick/local_dev/lvm.py

@@ -184,7 +184,10 @@ class LVM(executor.Executor):
                 consumed_space = pool_size / 100 * data_percent
                 free_space = pool_size - consumed_space
                 free_space = round(free_space, 2)
-        except putils.ProcessExecutionError as err:
+        # Need noqa due to a false error about the 'err' variable being unused
+        # even though it is used in the logging. Possibly related to
+        # https://github.com/PyCQA/pyflakes/issues/378.
+        except putils.ProcessExecutionError as err:  # noqa
             LOG.exception('Error querying thin pool about data_percent')
             LOG.error('Cmd     :%s', err.cmd)
             LOG.error('StdOut  :%s', err.stdout)

test-requirements.txt

@@ -2,7 +2,7 @@
 # of appearance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.
 
-hacking>=1.1.0,<1.2.0 # Apache-2.0
+hacking>=2.0.0 # Apache-2.0
 coverage!=4.4,>=4.0 # Apache-2.0
 ddt>=1.0.1 # MIT
 reno>=2.5.0 # Apache-2.0