use unshare to create new namesapce for run test

software/slapos-testing/buildout.hash.cfg

@@ -15,4 +15,4 @@
 
 [template]
 filename = instance.cfg
-md5sum = df528e38ae84578f7001e29e41f89222
+md5sum = 94ca09d9456b021cff29c4860a4f1549

software/slapos-testing/instance.cfg

@@ -195,7 +195,7 @@ template = inline:
   # )
   TestCase(
       "re6stnet",
-      ['python', '-m', 'unittest', 'discover', '-v'],
+      ['unshare', '-Umnr', 'bash', '-c', 'mount -t sysfs sysfs /sys && python -m unittest discover'],
       cwd="""$${re6stnet:location}/re6st/tests""",
       summaryf=UnitTest.summary,
   )

software/slapos-testing/software.cfg

@@ -143,6 +143,7 @@ eggs +=
   ${re6stnet-setup:egg}
   zope.testing
   supervisor
+  pathlib2
 
 [eggs/scripts]
 recipe = zc.recipe.egg
@@ -214,7 +215,8 @@ repository = https://lab.nexedi.com/nexedi/rubygemsrecipe.git
 
 [re6stnet-repository]
 <= git-clone-repository
-repository = https://lab.nexedi.com/nexedi/re6stnet.git
+branch=net_test
+repository = https://lab.nexedi.com/zf.huang/re6stnet.git
 
 
 [template]
@@ -263,3 +265,8 @@ urllib3 = 1.24.1
 pathlib = 1.0.1
 psycopg2 = 2.8.6
 miniupnpc = 1.9
+
+passfd = 1.0.2
+python-unshare = 0.2
+nemu = 0.3.1
+