merge nathanlws: Ignore *.policy for license check
merge nathanlws: Ignore *.policy for license check

Merge pull request #1685 from nathanlws/sql-layer/license-check-ignore-policy
https://github.com/FoundationDB/sql-layer/pull/1685

qiuyesuifeng/sql-layer,relateiq/sql-layer,shunwang/sql-layer-1,jaytaylor/sql-layer,ngaut/sql-layer,jaytaylor/sql-layer,shunwang/sql-layer-1,wfxiang08/sql-layer-1,wfxiang08/sql-layer-1,ngaut/sql-layer,qiuyesuifeng/sql-layer,qiuyesuifeng/sql-layer,relateiq/sql-layer,jaytaylor/sql-layer,shunwang/sql-layer-1,shunwang/sql-layer-1,ngaut/sql-layer,jaytaylor/sql-layer,wfxiang08/sql-layer-1,wfxiang08/sql-layer-1,relateiq/sql-layer,qiuyesuifeng/sql-layer,relateiq/sql-layer,ngaut/sql-layer