RHEL-7 also calls it python2-jinja2

packaging/template.spec

@@ -1,7 +1,7 @@
 %global sfincb %{_datadir}/shellfu/include-bash
 %global shellfu_req shellfu >= 0.10.9, shellfu < 0.11
 %global saturnin_req shellfu-bash-saturnin >= 0.4.12, shellfu-bash-saturnin < 0.5
-%if 0%{?rhel} && 0%{?rhel} < 7
+%if 0%{?rhel} && 0%{?rhel} <= 7
 %global jinja_req python-jinja2
 %else
 %global jinja_req python2-jinja2