Extend the size of the pool that is handling workspace related operat…

…ions (#14884)

Signed-off-by: Sergii Kabashniuk <skabashniuk@redhat.com>

assembly/assembly-wsmaster-war/src/main/webapp/WEB-INF/classes/che/che.properties

@@ -64,7 +64,7 @@ che.workspace.pool.type=fixed
 # Configures the exact size of the pool, if it's set multiplier property is ignored.
 # If this property is not set(0, < 0, NULL) then pool sized to number of cores,
 #it can be modified within multiplier
-che.workspace.pool.exact_size=NULL
+che.workspace.pool.exact_size=30
 
 # This property is ignored when pool type is different from 'fixed' or exact pool size is set.
 # If it's set the pool size will be N_CORES * multiplier