plugins: Allow plugins to override JobLevel.

This patch implements the bVarLevel also for the setBareosValue
callback. This way the plugin can change the backup level of the Job if
it sees reason to change it.

src/filed/fd_plugins.c

@@ -2142,6 +2142,9 @@ static bRC bareosSetValue(bpContext *ctx, bVariable var, void *value)
    }
 
    switch (var) {
+   case bVarLevel:
+      jcr->setJobLevel(*(int *)value);
+      break;
    case bVarFileSeen:
       if (!accurate_mark_file_as_seen(jcr, (char *)value)) {
          return bRC_Error;

src/plugins/filed/bareos_fd_consts.py

@@ -152,3 +152,18 @@
     IO_CLOSE=4,
     IO_SEEK=5
 )
+
+bLevels = dict(
+    L_FULL='F',
+    L_INCREMENTAL='I',
+    L_DIFFERENTIAL='D',
+    L_SINCE='S',
+    L_VERIFY_CATALOG='C',
+    L_VERIFY_INIT='V',
+    L_VERIFY_VOLUME_TO_CATALOG='O',
+    L_VERIFY_DISK_TO_CATALOG='d',
+    L_VERIFY_DATA='A',
+    L_BASE='B',
+    L_NONE=' ',
+    L_VIRTUAL_FULL='f'
+)

src/plugins/filed/python-fd.c

@@ -2683,6 +2683,15 @@ static PyObject *PyBareosSetValue(PyObject *self, PyObject *args)
    }
 
    switch (var) {
+   case bVarLevel: {
+      int value = 0;
+
+      value = PyInt_AsLong(pyValue);
+      if (value) {
+         retval = bfuncs->setBareosValue(ctx, (bVariable)var, &value);
+      }
+      break;
+   }
    case bVarFileSeen: {
       char *value;