Unify location of the SCE option

SCE should be built in Ubuntu 20.04 and 22.04 products. However, this
is specified only in the CI workflow description. In previous commit we
have started to build SCE in RHEL 9 and 10. If we would like to start
testing it in CI, we could do it either by changing the CI workflow
description or the build_product script. It would be less complex if we
could unify it in a single place which is the build_product script.

.github/workflows/gate.yaml

@@ -95,7 +95,7 @@ jobs:
         run: pip3 install -r requirements.txt -r test-requirements.txt
       - name: Build
         env:
-          ADDITIONAL_CMAKE_OPTIONS: "-DSSG_SCE_ENABLED:BOOL=ON -DSSG_OVAL_SCHEMATRON_VALIDATION_ENABLED=OFF"
+          ADDITIONAL_CMAKE_OPTIONS: "-DSSG_OVAL_SCHEMATRON_VALIDATION_ENABLED=OFF"
         run: |-
           ./build_product ubuntu1604 ubuntu1804 ubuntu2004
       - name: Test
@@ -114,7 +114,7 @@ jobs:
         run: pip3 install -r requirements.txt -r test-requirements.txt
       - name: Build
         env:
-          ADDITIONAL_CMAKE_OPTIONS: "-DSSG_SCE_ENABLED:BOOL=ON -DSSG_OVAL_SCHEMATRON_VALIDATION_ENABLED=OFF"
+          ADDITIONAL_CMAKE_OPTIONS: "-DSSG_OVAL_SCHEMATRON_VALIDATION_ENABLED=OFF"
         run: |-
           ./build_product ubuntu2204
       - name: Test

build_product

@@ -339,7 +339,8 @@ set_no_derivatives_options() {
 
 set_sce_options() {
 	grep -q "SSG_SCE_ENABLED" <<< "$ADDITIONAL_CMAKE_OPTIONS" && return
-	if grep -q 'rhel9\|rhel10' <<< "${_arg_product[*]}"; then
+	# These products will build SCE by default
+	if grep -q -E 'rhel9|rhel10|ubuntu2004|ubuntu2204' <<< "${_arg_product[*]}"; then
 		CMAKE_OPTIONS+=("-DSSG_SCE_ENABLED:BOOL=ON")
 	fi
 }