twoliter: avoid duplicate macro declaration

[bcressey]

Issue number:

Closes #388

Description of changes:
Processes that run as root need the target's macros in order to parse spec files. Copy the macros to root's home directory rather than to the system-wide /etc/rpm location, to avoid defining macros twice for other users, such as the unprivileged builder user. Otherwise, the redundant definition forces macros to be undefined twice to clear them from the per-user and the system-level scopes.

Testing done:
Built core kits for both targets.

Verified that I could %undefine cross_check_fips just once - as intended - to suppress the FIPS check:

diff --git a/packages/runc/runc.spec b/packages/runc/runc.spec
index 8c695be6..adad32ae 100644
--- a/packages/runc/runc.spec
+++ b/packages/runc/runc.spec
@@ -1,3 +1,5 @@
+%undefine cross_check_fips
+
 %global goproject github.com/opencontainers
 %global gorepo runc
 %global goimport %{goproject}/%{gorepo}
@@ -65,7 +67,7 @@ install -d %{buildroot}%{_cross_bindir}
 install -p -m 0755 bin/runc %{buildroot}%{_cross_bindir}

 install -d %{buildroot}%{_cross_fips_bindir}
-install -p -m 0755 fips/bin/runc %{buildroot}%{_cross_fips_bindir}
+%dnl install -p -m 0755 fips/bin/runc %{buildroot}%{_cross_fips_bindir}

 %cross_scan_attribution go-vendor vendor

@@ -78,6 +80,6 @@ install -p -m 0755 fips/bin/runc %{buildroot}%{_cross_fips_bindir}
 %{_cross_bindir}/runc

 %files fips-bin
-%{_cross_fips_bindir}/runc
+%dnl %{_cross_fips_bindir}/runc

Terms of contribution:

By submitting this pull request, I agree that this contribution is dual-licensed under the terms of both the Apache License, version 2.0, and the MIT license.