Travis: Try high-availability SKS keyserver pool

The saga continues ...

.travis.yml

@@ -80,7 +80,7 @@ script:
       mkdir -p ~/src/ljt.nightly &&
       if [ "$TRAVIS_OS_NAME" = "linux" ]; then
         mkdir $HOME/rpmkeys &&
-        wget --no-check-certificate "http://pool.sks-keyservers.net/pks/lookup?op=get&search=0x0575F26BD5B3FDB1" -O $HOME/rpmkeys/LJTPR-GPG-KEY &&
+        wget --no-check-certificate "http://ha.pool.sks-keyservers.net/pks/lookup?op=get&search=0x0575F26BD5B3FDB1" -O $HOME/rpmkeys/LJTPR-GPG-KEY &&
         docker run -v $HOME/src/ljt.nightly:/root/src/ljt.nightly -v $HOME/src/buildscripts:/root/src/buildscripts -v $TRAVIS_BUILD_DIR:/root/src/libjpeg-turbo -v $HOME/.gnupg:/root/.gnupg -v $HOME/rpmkeys:/rpmkeys -t dcommander/buildljt:latest bash -c "rpm --import /rpmkeys/LJTPR-GPG-KEY && ~/src/buildscripts/buildljt -d /root/src/libjpeg-turbo -v" &&
         sudo chown -R travis:travis ~/src/ljt.nightly &&
         mv ~/src/ljt.nightly/latest/log-$TRAVIS_OS_NAME.txt ~/src/ljt.nightly/latest/files/;