add missing BuildRequires: systemd-rpm-macros for SLES 15

[corporate-gadfly]

On SLES, the package uses %service_del_preun and %service_del_postun macros but doesn't declare systemd-rpm-macros as a build dependency.

This causes the macros to be incorrectly expanded or missing, resulting in scriptlet failures during package removal on SLES15:

error: %preun(openvox-server) scriptlet failed, exit status 1
/var/tmp/rpm-tmp.XXX: line 1: fg: no job control

Adding the BuildRequires ensures the macros are properly defined during package build.

[corporate-gadfly]

@nmburgan Thoughts on using following diff in Dockerfile in openvox-server:

diff --git a/Dockerfile b/Dockerfile
index 74b2df1cd1..7634b50a6a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -4,8 +4,14 @@ RUN apt-get update && \
     apt-get install -y --no-install-recommends \
       openjdk-17-jdk-headless \
       rpm \
+      cpio \
     && rm -rf /var/lib/apt/lists/*
 
+# Extract the RPM macros to resolve the expansion of macros on SLES
+RUN wget -q https://rpmfind.net/linux/opensuse/distribution/leap/16.0/repo/oss/noarch/systemd-rpm-macros-26-160000.2.2.noarch.rpm -O /tmp/suse-macros.rpm && \
+    rpm2cpio /tmp/suse-macros.rpm | cpio -idmv -D / && \
+    rm /tmp/suse-macros.rpm
+
 RUN wget -q https://raw.githubusercontent.com/technomancy/leiningen/stable/bin/lein -O /usr/local/bin/lein && \
     chmod a+x /usr/local/bin/lein

[corporate-gadfly]

OpenVoxProject/openvox-server#245

[bastelfreak]

@corporate-gadfly when/where is systemd-rpm-macros required? Do we need it inside the container, before the package for for SLES is build? And if it's present, do we need to change any of the fpm parameters?

[corporate-gadfly]

@corporate-gadfly when/where is systemd-rpm-macros required? Do we need it inside the container, before the package for for SLES is build? And if it's present, do we need to change any of the fpm parameters?

@bastelfreak systemd-rpm-macros is required at the time of package build for SLES. Since it is not a native SLES docker image, I am resorting to finding an RPM and extracting the macros, so that hopefully rpm-build is able to find them when building the RPM.

fpm parameters were added as part of this PR to add to the header of the RPM .spec file.

The hope is that rpm-build won't fail after seeing the macros on the file system.

Running out of ideas.