Autopkgtest fixes: remove extra quote, do not run tests for unimplemented feature
Changes:
- Make parameters had extra quotes that were passed into the Makefile and were treated as a part of the username/password. Remove extra quotes.
- Properties feature is not fully implemented in PyWebdav and causes the test failures. Skip 'props' test suite.
Testing:
- rebuilt and ran autopackagetest:
autopkgtest [08:08:08]: @@@@@@@@@@@@@@@@@@@@ summary
command1 PASS
run-testsuite3 PASS
qemu-system-x86_64: terminating on signal 15 from pid 503083 (/usr/bin/python3)