Travis network errors: use github mirrors for git.apache.org (#1629)
Travis network errors: use github mirrors for git.apache.org (#1629)


pagespeed/mod_pagespeed,pagespeed/mod_pagespeed,pagespeed/mod_pagespeed,pagespeed/mod_pagespeed,pagespeed/mod_pagespeed,pagespeed/mod_pagespeed,pagespeed/mod_pagespeed