ci: Add gwak to docker images

Building localedef for the host requires this.

Signed-off-by: Joel Stanley <joel@jms.id.au>
diff --git a/ci/Dockerfile/fedora29 b/ci/Dockerfile/fedora29
index 362fbc6..97bbfe7 100644
--- a/ci/Dockerfile/fedora29
+++ b/ci/Dockerfile/fedora29
@@ -1,7 +1,7 @@
 FROM fedora:29
 RUN dnf -y remove vim-minimal
 RUN dnf -y install gcc-c++ flex bison git ctags cscope expat-devel patch zlib-devel zlib-static texinfo perl-bignum "perl(XML::Simple)" "perl(YAML)" "perl(XML::SAX)" "perl(Fatal)" "perl(Thread::Queue)" "perl(Env)" "perl(XML::LibXML)" "perl(Digest::SHA1)" libxml2-devel libxslt "perl(ExtUtils::MakeMaker)"
-RUN dnf -y install which wget unzip tar cpio python bzip2 bc vim redhat-lsb-core
+RUN dnf -y install which wget unzip tar cpio python bzip2 bc vim redhat-lsb-core gawk
 RUN dnf -y install findutils
 RUN dnf -y install ncurses-devel openssl-devel
 RUN dnf -y install rsync