disable TLS handshake info in payload capture about appscope

[iapaddler]

Design discussions regarding LogStream indicate that LS will require the TLS exchange in support of protocol detection. Therefore, current thinking is to remove the TLS exchange when emitting payload data to files, but keep it intact when connected to LS.

[iapaddler]

Sort of getting close. Sending a request and extracting encrypted payload without TLS.

00000000 47 45 54 20 2f 41 6d 65 73 20 48 54 54 50 2f 31 |GET /Ames HTTP/1|

00000010 2e 31 0d 0a 48 6f 73 74 3a 20 77 74 74 72 2e 69 |.1..Host: wttr.i|

00000020 6e 0d 0a 55 73 65 72 2d 41 67 65 6e 74 3a 20 63 |n..User-Agent: c|

00000030 75 72 6c 2f 37 2e 36 38 2e 30 0d 0a 41 63 63 65 |url/7.68.0..Acce|

00000040 70 74 3a 20 2a 2f 2a 0d 0a 0d 0a 15 03 03 00 1a |pt: /.........|

00000050 51 5e 14 75 81 5d 21 bd a6 f6 67 bd aa 3d 04 82 |Q^.u.]!...g..=..|

00000060 10 ba fa 06 88 2d 13 6c c3 5c |.....-.l.|