lose useful comments for container-analysis

[xiaozhenliu-gg5]

we lose some parameter comments for getIamPolicy, setIamPolicy, testIamPermission which from grafeas/v1

ref: googleapis/nodejs-containeranalysis#135

[alexander-fenster]

With the addition of protos to .jsdoc.js, those lost comments are not really useful, so I'll close this. I'll open two more issues instead :)