[Feature] Rename `ANDROID_SDK_VERSION` to `FACEBOOK_ANDROID_SDK_VERSION`

[peterpeterparker]

Bug or feature request

[X] I'm reporting a feature request

Describe the Bug of feature request

The variable ANDROID_SDK_VERSION is confusing, specially when I'm tired like today. It isn't the value of the Android SDK version but it is the value of the Facebook SDK version for Android

Expected Behavior

We should rename ANDROID_SDK_VERSION to FACEBOOK_ANDROID_SDK_VERSION or FB_ANDROID_SDK_VERSION or FACEBOOK_SDK_VERSION_ANDROID etc.

Additional Context

Follow up: #705 and
#507

[peterpeterparker]

And the winner is FACEBOOK_ANDROID_SDK_VERSION

ANDROID_SDK_VERSION has been renamed in master with FACEBOOK_ANDROID_SDK_VERSION see commit 114a93a

This will be released with v2.5.0