CB-13571: (android) Prevent crash with unrecognized android version
CB-13571: (android) Prevent crash with unrecognized android version

Fixes issue where commands that list images will crash when an image with a version not present in `android-versions` is encountered, as is presently the case with API 27:

```
cordova run android --list
Available android devices:
Available android virtual devices:
LEVEL: null
ERROR: TypeError: Cannot read property 'semver' of null
An unexpected error has occured while running list-emulator-images with code 2: Error: /home/chris/Repositories/acp-guidelines/cordova/platforms/android/cordova/lib/list-emulator-images: Command failed with exit code 2
```

Signed-off-by: Chris Alfano <711c73f64afdce07b7e38039a96d2224209e9a6c@jarv.us>

GroupAhead/cordova-android,apache/cordova-android,jfrumar/cordova-android,GroupAhead/cordova-android,jfrumar/cordova-android,GroupAhead/cordova-android,apache/cordova-android,apache/cordova-android,jfrumar/cordova-android