Update code style checking.

- Exempt overlong URL lines from checks.
- Omit some of the more painful PEP items.

share/spack/qa/flake8-framework

@@ -0,0 +1,10 @@
+# -*- conf -*-
+[flake8]
+# Descriptions of ignored checks:
+#
+# E221: multiple spaces before operator
+# E241: multiple spaces after ‘,’
+# F403: disable wildcard import
+#
+ignore = E221,E241,F403
+max-line-length = 79

share/spack/qa/flake8-packages

@@ -0,0 +1,11 @@
+# -*- conf -*-
+[flake8]
+# Descriptions of ignored checks:
+#
+# E221: multiple spaces before operator
+# E241: multiple spaces after ‘,’
+# F403: disable wildcard import
+# F821: undefined name (needed for build commands)
+#
+ignore = E221,E241,F403,F821
+max-line-length = 79