Re-creating a dropped namespace and contained table inherits previously set space quota settings

As demonstarted in HBASE-20662.master.002.patch re-creating a dropped namespace and contained table inherits previously set space quota settings.

Steps:

• Create a namespace and a table in it
• Set space quota on namespace
• Violate namespace quota
• Drop table and then namespace
• Re create same namespace and same table
• Put data into the table (more than the previosuly set namespace quota limit)

  private void setQuotaAndThenDropNamespace(final String namespace, SpaceViolationPolicy policy)
      throws Exception {
    Put put = new Put(Bytes.toBytes("to_reject"));
    put.addColumn(Bytes.toBytes(SpaceQuotaHelperForTests.F1), Bytes.toBytes("to"),
      Bytes.toBytes("reject"));
    createNamespaceIfNotExist(TEST_UTIL.getAdmin(), namespace);
    // Do puts until we violate space policy
    final TableName tn = writeUntilNSSpaceViolationAndVerifyViolation(namespace, policy, put);
    // Now, drop the table
    TEST_UTIL.deleteTable(tn);
    LOG.debug("Successfully deleted table ", tn);
    // Now, drop the namespace
    TEST_UTIL.getAdmin().deleteNamespace(namespace);
    LOG.debug("Successfully deleted the namespace ", namespace);
    // Now re-create the namespace
    createNamespaceIfNotExist(TEST_UTIL.getAdmin(), namespace);
    LOG.debug("Successfully re-created the namespace ", namespace);
    TEST_UTIL.createTable(tn, Bytes.toBytes(SpaceQuotaHelperForTests.F1));
    LOG.debug("Successfully re-created table ", tn);
    // Put some rows now: should not violate as namespace/quota was dropped
    verifyNoViolation(policy, tn, put);
  }
  

Expected: SpaceQuota settings should not exist on the newly re-created table and we should be able to put limit less data into the table

Actual: We fail to put data into newly created table as SpaceQuota settings (systematically created due to previously added namespace space quota) exist on table