mgr/vol: re-write for better readability

mgr/vol: re-write for better readability

Instead of writing like this  -

  if abcd1.abcd2(abcd3) and abcd4 == abcd5
	print('efgh6')
  if abcd7.abcd8(abcd9) and abcd4 == abcd5
	print('efgh10')

Write like this because it easier to read, especially in case of the
patch where condition under is really long -

  if abcd4 == abcd5:
    if abcd1.abcd2(abcd3):
	print('abcd4')
    if abcd5.abcd8(abcd9):
	print('abcd5')

Signed-off-by: Rishabh Dave <ridave@redhat.com>