Merge "Dissuade .gitignore references to personal tools"

.gitignore

@@ -1,3 +1,14 @@
+# Add patterns in here to exclude files created by tools integrated with this
+# repository, such as test frameworks from the project's recommended workflow,
+# rendered documentation and package builds.
+#
+# Don't add patterns to exclude files created by preferred personal tools
+# (editors, IDEs, your operating system itself even). These should instead be
+# maintained outside the repository, for example in a ~/.gitignore file added
+# with:
+#
+# git config --global core.excludesfile '~/.gitignore'
+
 # Compiled source #
 ###################
 *.com
@@ -33,25 +44,11 @@ logs/*
 
 # OS generated files #
 ######################
-.DS_Store
-.DS_Store?
 ._*
-.Spotlight-V100
-.Trashes
-.idea
 .tox
-*.sublime*
 *.egg-info
-Icon?
-ehthumbs.db
-Thumbs.db
 .eggs
 
-# User driven backup files #
-############################
-*.bak
-*.swp
-
 # Generated by pbr while building docs
 ######################################
 AUTHORS
@@ -70,6 +67,3 @@ tests/*.retry
 # Git clones
 openstack-ansible-ops
 previous
-
-# Editor files
-.vscode