test: Increase TestHostSwitching VM memory for devel scenario

The Python bridge currently loads all package files into memory. These
become very big in the devel scenario, causing some OOM in
TestHostSwitching. This is going to be addressed in PR #19065; increase
the VM size until that lands.

test/verify/check-shell-host-switching

@@ -17,6 +17,7 @@
 # You should have received a copy of the GNU Lesser General Public License
 # along with Cockpit; If not, see <http://www.gnu.org/licenses/>.
 
+import os
 import time
 
 import testlib
@@ -104,7 +105,8 @@ class HostSwitcherHelpers:
 @testlib.todoPybridgeRHEL8()
 class TestHostSwitching(testlib.MachineCase, HostSwitcherHelpers):
     provision = {
-        'machine1': {"address": "10.111.113.1/20", "memory_mb": 512},
+        # HACK: pybridge uses too much memory in devel scenario, revert after PR #19065
+        'machine1': {"address": "10.111.113.1/20", "memory_mb": 768 if "devel" in os.getenv("TEST_SCENARIO", "") else 512},
         'machine2': {"address": "10.111.113.2/20", "memory_mb": 512},
         'machine3': {"address": "10.111.113.3/20", "memory_mb": 512}
     }