Allow to set limit memory on containers

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

Conflicts:
	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

@@ -208,6 +208,9 @@ class ComposeV1Builder(object):
         if 'log_tag' in cconfig:
             cmd.append('--log-opt=tag=%s' % cconfig['log_tag'])
         self.string_arg(cconfig, cmd, 'cpu_shares', '--cpu-shares')
+        self.string_arg(cconfig, cmd, 'mem_limit', '--memory')
+        self.string_arg(cconfig, cmd, 'memswap_limit', '--memory-swap')
+        self.string_arg(cconfig, cmd, 'mem_swappiness', '--memory-swappiness')
         self.string_arg(cconfig, cmd, 'security_opt', '--security-opt')
         self.string_arg(cconfig, cmd, 'stop_signal', '--stop-signal')
 
@@ -262,9 +265,8 @@ class ComposeV1Builder(object):
         # domainname
         # hostname
         # mac_address
-        # mem_limit
-        # memswap_limit
-        # mem_swappiness
+        # memory_reservation
+        # kernel_memory
         # read_only
         # shm_size
         # stdin_open

paunch/tests/test_builder_compose1.py

@@ -432,7 +432,10 @@ three-12345678 three''', '', 0),
                 'env_file': '/tmp/foo.env',
                 'log_tag': '{{.ImageName}}/{{.Name}}/{{.ID}}',
                 'cpu_shares': 600,
-                'security_opt': 'label:disable'
+                'security_opt': 'label:disable',
+                'mem_limit': '1G',
+                'memswap_limit': '1G',
+                'mem_swappiness': '60'
             }
         }
         builder = compose1.ComposeV1Builder('foo', config, None)
@@ -449,6 +452,9 @@ three-12345678 three''', '', 0),
              '--privileged=true', '--restart=always', '--user=bar',
              '--log-opt=tag={{.ImageName}}/{{.Name}}/{{.ID}}',
              '--cpu-shares=600',
+             '--memory=1G',
+             '--memory-swap=1G',
+             '--memory-swappiness=60',
              '--security-opt=label:disable', '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.