Add dependency on e2fsprogs

It is needed by the startup scripts to create fs on fresh private image.
Otherwise /rw (and thus /home) isn't mounted and user applications fail
to start.

Fixes QubesOS/qubes-issues#4671

debian/control

@@ -38,6 +38,7 @@ Depends:
     psmisc,
     procps,
     util-linux,
+    e2fsprogs,
     python2.7,
     python-daemon,
     python-qubesdb,

rpm_spec/core-agent.spec.in

@@ -118,6 +118,7 @@ Requires:   initscripts
 Requires:   gawk
 Requires:   sed
 Requires:   util-linux
+Requires:   e2fsprogs
 Requires:   hostname
 # for Qubes Manager VM updater
 Requires:   xterm