Re-enables android build jobs

Closes #1170 .

Author: gnzlbg

.travis.yml

@@ -88,10 +88,6 @@ matrix:
         - shellcheck --version
         - shellcheck ci/*.sh
 
-  allow_failures:
-    - env: TARGET=aarch64-linux-android
-    - env: TARGET=x86_64-linux-android
-
 install: rustup target add $TARGET
 script:
   - cargo generate-lockfile --manifest-path libc-test/Cargo.toml

ci/android-install-sdk.sh

@@ -46,9 +46,9 @@ case "$1" in
 esac;
 
 # --no_https avoids
-# javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: No trusted certificate found
-echo "yes" | \
-    ./sdk/tools/bin/sdkmanager --no_https \
+     # javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: No trusted certificate found
+yes | ./sdk/tools/bin/sdkmanager --licenses --no_https
+yes | ./sdk/tools/bin/sdkmanager --no_https \
         "emulator" \
         "platform-tools" \
         "platforms;android-24" \