Merge pull request #1720 in SNORT/snort3 from ~KATHARVE/snort3:http2_framework to...

Merge pull request #1720 in SNORT/snort3 from ~KATHARVE/snort3:http2_framework to master

Squashed commit of the following:

commit 513ce97b05f7efc8d49df200bf7f26bd4bc3afb2
Author: Katura Harvey <katharve@cisco.com>
Date:   Fri Aug 30 14:17:29 2019 -0400

    modify event enum names and correctly handle preface split multile across tcp packets

commit f209fca6eaa6825f627d87f76321c41cc95a0ec7
Author: Katura Harvey <katharve@cisco.com>
Date:   Fri Aug 30 11:37:22 2019 -0400

    fix data length in unit test

commit b1da12736d0576d1004d8320dcdda6e9e66fccb0
Author: Katura Harvey <katharve@cisco.com>
Date:   Thu Aug 29 22:59:47 2019 -0400

    update unit test to avoid adding another spelling exception

commit 687d7c7f9e827c283962d991ef25a738f9c25c82
Author: Katura Harvey <katharve@cisco.com>
Date:   Thu Aug 29 17:19:14 2019 -0400

    address more comments

commit 5ee375bae4390516802cef80e69b2da16df1726f
Author: Katura Harvey <katharve@cisco.com>
Date:   Thu Aug 29 17:15:49 2019 -0400

    fix bug in scan - it wasn't actually searching until the end of data frames

commit 039c6513104af4116d51e3e72ddf570f581eda90
Author: Katura Harvey <katharve@cisco.com>
Date:   Thu Aug 29 10:36:10 2019 -0400

    fix comment

commit b7f2c09c64a7c6db49351dd53bb2c5f2ebed0215
Author: Katura Harvey <katharve@cisco.com>
Date:   Wed Aug 28 10:48:57 2019 -0400

    address first batch of comments

commit 559e6de2c803bb2bd09179624ac7b35d59b060f1
Author: Katura Harvey <katharve@cisco.com>
Date:   Tue Aug 27 10:42:42 2019 -0400

    code cleanup

commit 918fb7e2de8533fb3e9f14f3c5488757abd1be95
Author: Katura Harvey <katharve@cisco.com>
Date:   Mon Aug 26 21:19:03 2019 -0400

    http2_inspect: send raw encoded headers to detection