py-configparser conflicts with py-backports

[ryandesign (Ryan Carsten Schmidt)]

$ sudo port -u upgr outdated and name:py
--->  Computing dependencies for py27-configparser
--->  Fetching archive for py27-configparser
--->  Attempting to fetch py27-configparser-3.5.1_0.darwin_17.noarch.tbz2 from https://packages.macports.org/py27-configparser
--->  Fetching distfiles for py27-configparser
--->  Attempting to fetch configparser-3.5.1.tar.gz from https://files.pythonhosted.org/packages/source/c/configparser
--->  Verifying checksums for py27-configparser
--->  Extracting py27-configparser
--->  Configuring py27-configparser
--->  Building py27-configparser
--->  Staging py27-configparser into destroot
--->  Installing py27-configparser @3.5.1_0
--->  Cleaning py27-configparser
--->  Computing dependencies for py27-configparser
--->  Deactivating py27-configparser @3.5.0_0
--->  Cleaning py27-configparser
--->  Activating py27-configparser @3.5.1_0
Error: Failed to activate py27-configparser: Image error: /opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/backports/__init__.py is being used by the active py27-backports port.  Please deactivate this port first, or use 'port -f activate py27-configparser' to force the activation.
Error: See /opt/local/var/macports/logs/_Users_rschmidt_macports_macports-ports-ryandesign-fork_python_py-configparser/py27-configparser/main.log for details.

[ryandesign (Ryan Carsten Schmidt)]

​https://build.macports.org/builders/ports-10.7_x86_64_legacy-builder/builds/93172/steps/install-port/logs/stdio

[stromnov (Andrey Stromnov)]

In bda1ae17818878c730edc7ef525818d8263869f4/macports-ports (master):

py-configparser: update to 3.5.2

Closes: #57954