main/gstreamer1: upgrade to 1.4.4
main/gst-plugins-base1: upgrade to 1.4.4
main/gst-libav1: upgrade to 1.4.4
main/gst-plugins-bad1: upgrade to 1.4.4
main/gst-plugins-good1: upgrade to 1.4.4
main/gst-plugins-ugly1: upgrade to 1.4.4
main/dnssec-root: embed root-anchors.xml in APKBUILD

- use https for signature and pgp key
- use gnupg2