mgmt-tester: Add test for Device Privacy Mode flag

mgmt-tester: Add test for Device Privacy Mode flag

This tests the use of Set Device Flags to set Device Privacy Mode which
results in the following sequence:

@ MGMT Event: Command Compl.. (0x0001) plen 10  {0x0001}
      Set Device Flags (0x0050) plen 7
        Status: Success (0x00)
        LE Address: BC:9A:78:56:34:12 (OUI BC-9A-78)
< HCI Command: LE Set Exten.. (0x08|0x0042) plen 6
        Extended scan: Disabled (0x00)
        Filter duplicates: Disabled (0x00)
        Duration: 0 msec (0x0000)
        Period: 0.00 sec (0x0000)
= mgmt-tester: Set Device Flags (0x0050): Success (0x00)
= mgmt-tester: Test condition complete, 4 left
= mgmt-tester: New Device Flags Changed event received
= mgmt-tester: Test condition complete, 3 left
> HCI Event: Command Complete (0x0e) plen 4
      LE Set Extended Scan Enable (0x08|0x0042) ncmd 1
        Status: Success (0x00)
< HCI Command: LE Set Addre.. (0x08|0x002d) plen 1
        Address resolution: Disabled (0x00)
= mgmt-tester: HCI Command 0x2042 length 6
> HCI Event: Command Complete (0x0e) plen 4
      LE Set Address Resolution Enable (0x08|0x002d) ncmd 1
        Status: Success (0x00)
< HCI Command: LE Set Priva.. (0x08|0x004e) plen 8
        Peer Identity address type: Public (0x00)
        Peer Identity address: BC:9A:78:56:34:12 (OUI BC-9A-78)
        Privacy Mode: Use Device Privacy (0x01)
= mgmt-tester: HCI Command 0x202d length 1
= mgmt-tester: Test condition complete, 2 left
> HCI Event: Command Complete (0x0e) plen 4
      LE Set Privacy Mode (0x08|0x004e) ncmd 1
        Status: Success (0x00)
< HCI Command: LE Set Addre.. (0x08|0x002d) plen 1
        Address resolution: Enabled (0x01)
= mgmt-tester: HCI Command 0x204e length 8
= mgmt-tester: Test condition complete, 1 left
> HCI Event: Command Complete (0x0e) plen 4
      LE Set Address Resolution Enable (0x08|0x002d) ncmd 1
        Status: Success (0x00)
< HCI Command: LE Set Exten.. (0x08|0x0041) plen 8
        Own address type: Random (0x03)
        Filter policy: Ignore not in accept list (0x01)
        PHYs: 0x01
        Entry 0: LE 1M
          Type: Passive (0x00)
          Interval: 60.000 msec (0x0060)
          Window: 30.000 msec (0x0030)
= mgmt-tester: HCI Command 0x202d length 1
= mgmt-tester: Test condition complete, 0 left

Signed-off-by: Ayush Garg <ayush.garg@samsung.com>