Rename K2_HOME and log messages still containing K2

* - Rename K2_HOME variables
* - Rename K2 with CSEC in logs variables

* Update package of all instrumentation module.
package prefix should be  com.newrelic.agent.security.instrumentation

* Enabled low severity hooks for unit test cases

* Relocating all our instrumentation packages under the package com.newrelic.agent.security.instrumentation.*
* Package Refactoring for Unit Tests : Move packaging for all UTs to com.nr.agent.security.instrumentation.*
* PostgreSQL UTs with Embedded Server

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Co-authored-by: Monu Lakshkar <[email protected]>

… to api under helpers package 'com.newrelic.api.agent.security.instrumentation.helpers'

Fix ClassNotFoundException for IOStreamHelper

* support for std out logging
* add feature for Daily log rollover
* Support logger config : log_file_count and log_limit_in_kbytes
* Remove NR_CSEC_DEBUG_LOGFILE_SIZE and NR_CSEC_DEBUG_LOGFILE_MAX_COUNT

* Initial setup for cassandra

* Event generation for Cassandra 3 & 4

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Co-authored-by: lovesh-ap <[email protected]>

New API in Introspector for unit test cases

* cassandra-datastax 3 instrumentation

Co-authored-by: lovesh-ap <[email protected]>

* unit test setup for cassandra 3

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Co-authored-by: Monu Lakshkar <[email protected]>

* cassandra-datastax 4 instrumentation

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Co-authored-by: lovesh-ap <[email protected]>

* unit test setup for cassandra 4

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Co-authored-by: Monu Lakshkar <[email protected]>

* Added instrumentation for httpclient-5 (sync)

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Co-authored-by: lovesh-ap <[email protected]>

* Added unittest cases for httpclient-5 (sync)

* Fix for broken pipe issue

* Renamed unit test package

* Add parent-id header to outgoing http requests

* Removed unused code

* added csec parent id unit test cases

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Co-authored-by: lovesh-ap <[email protected]>

* Added instrumentation for httpclient-5 (sync)

* Added unittest cases for httpclient-5 (sync)

* Add parent-id header to outgoing http requests

* added csec parent id unit test cases

---------

Co-authored-by: idawda <[email protected]>
Co-authored-by: lovesh-ap <[email protected]>