Adjusts cancel methods in base plugin classes to exit immediately
1146294 - do not require pulp.bindings.server to access DEFAULT_CA_PATH

The Katello agent uses DEFAULT_CA_PATH, but does not install the Pulp bindings
by default. The constant should live in pulp.common.constants instead.
Merge pull request #1277 from bmbouter/US3018

US3018 - Adjusts cancel methods in base plugin classes to exit immediately
Merge pull request #1296 from beav/move-constant

1146294 - do not require pulp.bindings.server to access DEFAULT_CA_PATH
Merge remote-tracking branch 'origin/2.5-dev'
1129488 - Adjusts mongoDB auto-reconnect to never stop attempting
Merge pull request #1302 from bmbouter/1129488

1129488 - Adjusts mongoDB auto-reconnect to never stop attempting
Merge branch '2.5-testing' into 2.5-dev
Merge branch '2.5-dev'
Fixes merge forward error only present on master
Merge pull request #1306 from bmbouter/fix-mongodb-merge-error-on-master

Fixes merge forward error only present on master
1132663 - pulp-manage-db now has a --dry-run flag.

This flag returns 1 if changes would have been made by pulp-manage-db
and 0 if everything is up-to-date.