Cache the caches to avoid some npm bizarreness when bumping packages. #14374
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This changes the Travis caching setup to cache the
.npmand.cachedirectories, instead of caching the output ofnode_modules/bower_components. It should still reduce the network time, but allow the npm installs to work properly when there are package bumps.Follow suit with ember-cli/ember-cli#6279.
Can't make it worse ¯_(ツ)_/¯...