Fix Jenkins

[wohali]

3x builds are failing on Jenkins.

2 of them are because of changed lintian rules in Debian for packages.

1 of them is because dev/run got changed in a way that makes it not work for Python 3.

Ideally, run thru all of the Python scripts and make them run under Python 3.

[nickva]

Oops, my bad, I am sorry. It was probably this commit:

fbb5588

Should we make it python3 or revert it?

[wohali]

@nickva

The naughty thing that I had to do was, in the CentOS 6 Docker image, I installed python3 to /usr/local/bin/python and placed /usr/local/bin ahead of /usr/bin in the path. This is because CentOS 6 has Python 2.6, which is too old for some of the things we're doing in our code already...and I took great pains to ensure that all of the Python scripts we run in make check and make release and make dist work without change in both python 2 and python 3.

What I'd do is run 2to3 on all 4 scripts, and apply any changes it requests, then change it to python3. That'll be better for the future, when the distros decide to remove python 2.7 anyway. The error we're getting on Jenkins for CentOS6 for Python 3 is:

make[1]: Entering directory `/tmp/tmp.ILBeu2AdWN/apache-couchdb-2.2.0-fbb5588'
Traceback (most recent call last):
  File "dev/run", line 592, in <module>
    main()
  File "dev/run", line 80, in main
    ctx = setup()
  File "dev/run", line 94, in setup
    setup_configs(ctx)
  File "dev/run", line 65, in wrapper
    res = func(*args, **kwargs)
  File "dev/run", line 203, in setup_configs
    write_config(ctx, node, env)
  File "dev/run", line 239, in write_config
    content = hack_default_ini(ctx, node, content)
  File "dev/run", line 289, in hack_default_ini
    flags=re.MULTILINE)
TypeError: sub() got an unexpected keyword argument 'flags'

[wohali]

Jenkins is working now - despite this issue - thanks to working around at the VM level.

We still want to get the Python 2/3 thing sorted out.