"projects/playground": Use security.[Local/Remote]BlessingNames

CL 8243 depecrated security.BlessingNames and instead
introduced security.[Local/Remote]BlessingNames. This CL
updates the playground repo in accordance to this change.

Change-Id: I7c9a27b4da9d96aafc2a785d152b66e336ff0398
1 file changed
tree: c6e044e2fb3c07130abc07c1fa2f67d762f2d0fa
  1. client/
  2. go/
  3. pgbundle/
  4. .gitignore