Various packaging cleanup

* Declare compliance with policy 4.6.2
* Update lintian override
* Reformat files in debian/

debian/clevis-dracut.triggers

@@ -1 +1 @@
-activate-noawait update-initramfs
+activate-noawait    /update-initramfs

debian/clevis-initramfs.triggers

@@ -1 +1 @@
-activate-noawait update-initramfs
+activate-noawait    /update-initramfs

debian/clevis-udisks2.lintian-overrides

@@ -2,4 +2,4 @@
 # This program requires root,
 # see https://github.com/martinezjavier/clevis/commit/68427763f47132a21e3fee066f20500a187c3662
 # If there's a way to do this using POSIX capabilities, let me know.
-clevis-udisks2: setuid-binary usr/lib/*/clevis-luks-udisks2 4755 root/root
+clevis-udisks2: elevated-privileges 4755 root/root [usr/libexec/clevis-luks-udisks2]

debian/clevis.manpages

@@ -1,5 +1,5 @@
 
-debian/tmp/usr/share/man/man1/clevis.1
 debian/tmp/usr/share/man/man1/clevis-decrypt.1
 debian/tmp/usr/share/man/man1/clevis-encrypt-sss.1
 debian/tmp/usr/share/man/man1/clevis-encrypt-tang.1
+debian/tmp/usr/share/man/man1/clevis.1

debian/control

@@ -1,7 +1,7 @@
 Source: clevis
 Maintainer: Christoph Biedl <debian.axhn@manchmal.in-ulm.de>
 Homepage: https://github.com/latchset/clevis
-Standards-Version: 4.5.1
+Standards-Version: 4.6.2
 Vcs-Browser: https://git.in-ulm.de/cbiedl/clevis
 Vcs-Git: https://git.in-ulm.de/cbiedl/clevis.git
 Build-Depends: debhelper-compat (= 13),