AndroidManifest.xml requires by default a back camera

After publishing my application in the play store I am not seing my
application on Nexus 7 first gen. Looking at some forums I found that
since this model has no back camera and only a front one it is excluded
when the manifest requires one with "android.permission.CAMERA".

I tried to add the line '<uses-feature android:required="false"
android:name="android.hardware.camera"/>' in my AndroidManifest.xml but
this file is re-generated by the build system and anyway the line
'<uses-feature android:name="android.hardware.camera" />' is added to
the AndroidManifest.

In Google's documentation they suggest [1] to use instead
'android.hardware.camera.any' which means 'The application uses at least
one camera facing in any direction. Use this in preference to
android.hardware.camera if a back-facing camera is not required.'

Other option would be not to require the camera at all unless the application requires it, leaving to the developper the task to add the option in the Manifest.

[1]
http://developer.android.com/guide/topics/manifest/uses-feature-element.html#permissions