job_specs: reduce number of daily mrr tests

Remove:
- All vts tests, obsolete use cases.
- dot1q tests apart from dot1q-l2bd, superfluous combinations.
- nat44 tests
  - -pps tests, replaced by -tput tests.
  - h1-p1-s1 single session tests, unessential combination.
  - h4096-p63-s258048 tests, unessential scale combination.
- ipsec tests
  - ethip4ipsectptlispgpe.
  - policy-aes128gcm.
  - policy-aes128cbc-hmac256sha.
  - policy-aes128cbc-hmac512sha.
  - int-aes128cbc-hmac256sha.
  - scale of
    - 400tnlsw.
    - 5000tnlsw.
    - 20000tnlsw.
    - 60000tnlsw.

Change-Id: Iccce3e20299b4ac771228a6878b4f0961b0186de
Signed-off-by: Maciek Konstantynowicz <mkonstan@cisco.com>