ci: use ramdisk for E2E jobs
ci: use ramdisk for E2E jobs

E2E jobs perform a large amount of disk IO including multiple package installs, builds, and git operations.

angular/angular-cli,geofffilippi/angular-cli,ocombe/angular-cli,clydin/angular-cli,catull/angular-cli,ocombe/angular-cli,geofffilippi/angular-cli,catull/angular-cli,Brocco/angular-cli,Brocco/angular-cli,catull/angular-cli,ocombe/angular-cli,clydin/angular-cli,Brocco/angular-cli,angular/angular-cli,clydin/angular-cli,ocombe/angular-cli,geofffilippi/angular-cli,Brocco/angular-cli,catull/angular-cli,geofffilippi/angular-cli,Brocco/angular-cli,angular/angular-cli,clydin/angular-cli,ocombe/angular-cli,angular/angular-cli