Merge branch 'jgfouca/cime/seq_fix' into next (PR #1766)

Fix SEQ on skybridge/chama

Fix cherry-picked from ESMCI

[BFB]

* jgfouca/cime/seq_fix:
  Fix SEQ on skybridge/chama

cime/scripts/lib/CIME/SystemTests/seq.py

@@ -91,6 +91,9 @@ def run_phase(self):
         # update the pelayout settings for this run
         self._case.read_xml()
 
+        case_setup(self._case, test_mode=True, reset=True)
+        self._case.set_value("BUILD_COMPLETE", True) # rootpe changes should not require a rebuild
+
         self.run_indv()
 
         restore("env_mach_pes.SEQ2.xml", newname="env_mach_pes.xml")
@@ -103,5 +106,8 @@ def run_phase(self):
         # update the pelayout settings for this run
         self._case.read_xml()
 
+        case_setup(self._case, test_mode=True, reset=True)
+        self._case.set_value("BUILD_COMPLETE", True) # rootpe changes should not require a rebuild
+
         self.run_indv(suffix="seq")
         self._component_compare_test("base", "seq")