Properly fix license issue in CircleCI

[pavlospt]

Apparently this seems to be the only way to make build work, with the updated licenses. It also follows the same strategy as Travis.

I am using double pipe in sdkmanager command execution, to avoid breaking the build, because sdkmanager returns exit code 141 in case it meets the requirements requested. (e.g.: yes | sdkmanager --licenses returns 141, which in turn breaks the build due to set -eo pipefail Bash flags, that CircleCI is using in order to execute any scripts)

For the record, I tried the following solutions, that did not work:

• Add accepted license SHA in Android SDK licenses folder.
• Accept all licenses prior to running the other jobs (with a separate job, working as a dependency to the rest of the Workflow jobs) (yes | sdkmanager --licenses)
• Accept all licenses prior to executing any Gradle command (without a separate job) (yes | sdkmanager --licenses)

[facebook-github-bot]

@passy is landing this pull request. If you are a Facebook employee, you can view this diff on Phabricator.

[passy]

Thank you, Pavlos! :)