My requirement is, If I upload an ipa file in google drive or share point then the tester should be able to install the ipa in his device from drive with out using iTunes . Is it possible? I can achieve this by deploying the ipa, plist and index.html file in server. The test able to download it for testing.
Have a look at this link which describes the process of OTA distribution of ipa files. This link uses old version of Xcode but you can follow it in new Xcode versions as well.
Note: You need url in advance & web-server where you will upload the ipa . plist & html file. I think you can give try using Google Drive / Dropbox
Let me know if it works for you.