Upgrade bazlets to latest stable-2.15 to build with 2.15.5 API
Upgrade bazlets to latest stable-2.15 to build with 2.15.5 API

Change-Id: I68d57cf82c48da46a064d0f6bcbeff8c91b12fee

GerritCodeReview/plugins_admin-console,GerritCodeReview/plugins_admin-console,GerritCodeReview/plugins_admin-console