Allow to set limit memory on containers

This will add the features `--memory`, `--memory-swap` and
`--memory-swappiness`

Conflicts:
	paunch/builder/compose1.py
	paunch/builder/podman.py
	paunch/tests/test_builder_compose1.py
	paunch/tests/test_builder_podman.py

Change-Id: Icb44564906dbbe2d0407eaf1ab01eb450fcc73ce
Closes-Bug: #1801949
(cherry picked from commit 797e7ae19c)

paunch/builder/compose1.py

@@ -199,6 +199,12 @@ class ComposeV1Builder(object):
                 cmd.append('--cpuset-cpus=%s' % cconfig['cpuset_cpus'])
         else:
             cmd.append('--cpuset-cpus=%s' % common.get_cpus_allowed_list())
+        if 'mem_limit' in cconfig:
+            cmd.append('--memory=%s' % cconfig['mem_limit'])
+        if 'memswap_limit' in cconfig:
+            cmd.append('--memory-swap=%s' % cconfig['memswap_limit'])
+        if 'mem_swappiness' in cconfig:
+            cmd.append('--memory-swappiness=%s' % cconfig['mem_swappiness'])
 
         cmd.append(cconfig.get('image', ''))
         cmd.extend(self.command_argument(cconfig.get('command')))

paunch/tests/test_builder_compose1.py

@@ -434,7 +434,10 @@ three-12345678 three''', '', 0),
                 },
                 'env_file': '/tmp/foo.env',
                 'log_tag': '{{.ImageName}}/{{.Name}}/{{.ID}}',
-                'security_opt': 'label:disable'
+                'security_opt': 'label:disable',
+                'mem_limit': '1G',
+                'memswap_limit': '1G',
+                'mem_swappiness': '60'
             }
         }
         builder = compose1.ComposeV1Builder('foo', config, None)
@@ -450,6 +453,9 @@ three-12345678 three''', '', 0),
              '--privileged=true', '--restart=always', '--user=bar',
              '--log-opt=tag={{.ImageName}}/{{.Name}}/{{.ID}}',
              '--security-opt=label:disable', '--cpuset-cpus=0,1,2,3',
+             '--memory=1G',
+             '--memory-swap=1G',
+             '--memory-swappiness=60',
              'centos:7'],
             cmd
         )

releasenotes/notes/cgroups-memory-limit-ca571375d8047425.yaml

@@ -0,0 +1,8 @@
+---
+features:
+  - |
+    Add `--memory=x` option for the action run a container. This allows
+    setting constraints on max memory usage, which is `memory.limit_in_bytes`
+    in memory cgroup.
+    Also added `--memory-swap` and `--memory-swappiness` options to control
+    swap settings.