Add simple 'test-name-prefix*' filter to filter test cases with common prefix name

[PrzemekWirkus]

When using Greentea switch -n and putting * at the end of test suite name filter will run to filter in all test suite names starting with string before *.

Example usage:

1. Filter all tests with names starting with 'mbed-drivers-t', e.g.:

• tests-mbed_drivers-ticker
• tests-mbed_drivers-ticker_2
• tests-mbed_drivers-ticker_3
• tests-mbed_drivers-timeout

$ mbedgt -VS -n mbed-drivers-t*

2. Filter all tests with names starting with 'mbed-drivers-t' and test case
   'tests-mbed_drivers-rtc', e.g:

• tests-mbed_drivers-rtc
• tests-mbed_drivers-ticker
• tests-mbed_drivers-ticker_2
• tests-mbed_drivers-ticker_3
• tests-mbed_drivers-timeout

$ mbedgt -VS -n mbed-drivers-t*,tests-mbed_drivers-rtc

mbedgt: test suite report:
+--------------+---------------+-----------------------------+--------+--------------------+-------------+
| target       | platform_name | test suite                  | result | elapsed_time (sec) | copy_method |
+--------------+---------------+-----------------------------+--------+--------------------+-------------+
| K64F-GCC_ARM | K64F          | tests-mbed_drivers-rtc      | OK     | 21.53              | shell       |
| K64F-GCC_ARM | K64F          | tests-mbed_drivers-ticker   | OK     | 22.04              | shell       |
| K64F-GCC_ARM | K64F          | tests-mbed_drivers-ticker_2 | OK     | 21.99              | shell       |
| K64F-GCC_ARM | K64F          | tests-mbed_drivers-ticker_3 | OK     | 21.98              | shell       |
| K64F-GCC_ARM | K64F          | tests-mbed_drivers-timeout  | OK     | 22.01              | shell       |
+--------------+---------------+-----------------------------+--------+--------------------+-------------+
mbedgt: test suite results: 5 OK
mbedgt: test case report:
+--------------+---------------+-----------------------------+-----------------------+--------+--------+--------+--------------------+
| target       | platform_name | test suite                  | test case             | passed | failed | result | elapsed_time (sec) |
+--------------+---------------+-----------------------------+-----------------------+--------+--------+--------+--------------------+
| K64F-GCC_ARM | K64F          | tests-mbed_drivers-rtc      | RTC strftime          | 1      | 0      | OK     | 10.14              |
| K64F-GCC_ARM | K64F          | tests-mbed_drivers-ticker   | Timers: 2 x tickers   | 1      | 0      | OK     | 11.15              |
| K64F-GCC_ARM | K64F          | tests-mbed_drivers-ticker_2 | Timers: 1x ticker     | 1      | 0      | OK     | 11.16              |
| K64F-GCC_ARM | K64F          | tests-mbed_drivers-ticker_3 | Timers: 2x callbacks  | 1      | 0      | OK     | 11.15              |
| K64F-GCC_ARM | K64F          | tests-mbed_drivers-timeout  | Timers: toggle on/off | 1      | 0      | OK     | 11.15              |
+--------------+---------------+-----------------------------+-----------------------+--------+--------+--------+--------------------+
mbedgt: test case results: 5 OK
mbedgt: completed in 109.65 sec

[PrzemekWirkus]

@bridadan Please review.
@mazimkhan @adbridge FYI.

[bridadan]

@PrzemekWirkus Code looks good. Tested this locally and all seems to be well.

+1