main/dovecot: do not depend on logrotate

use of logrotate should be optional

fixes #2065

main/dovecot/APKBUILD

@@ -2,12 +2,12 @@
 # Maintainer: Natanael Copa <ncopa@alpinelinux.org>
 pkgname=dovecot
 pkgver=2.2.2
-pkgrel=0
+pkgrel=1
 pkgdesc="IMAP and POP3 server"
 url="http://www.dovecot.org/"
 arch="all"
 license="LGPL-2.1"
-depends="openssl logrotate"
+depends="openssl"
 pkgusers="dovecot dovenull"
 pkggroups="dovecot dovenull"
 makedepends="libcap-dev zlib-dev openssl-dev bzip2-dev postgresql-dev