[Bug]: Hash verification failing for bal tool pull

[gayaldassanayake]

Description

1. When we pull a bal tool, a hash verification failure error occurs.
2. Once pulled, the process hangs for a very long time before terminating. I suspect this is due to the issue (1).

Steps to Reproduce

With distribution version 2201.9.0 pull a bal tool.

$ bal tool pull health
ballerina/editoolspackage:1.0.0 [central.ballerina.io -> ...central.ballerinaballerina/editoolspackage:1.0.0 ballerina/editoolspackage:1.0.0 pulled from central successfully

*************************************************************
* WARNING: Certain packages may have originated from sources other than the official distributors. *
*************************************************************

* Verification failed: The hash value of the following package could not be confirmed.
ballerina/editoolspackage:1.0.0

tool 'edi:1.0.0' pulled successfully.
tool 'edi:1.0.0' is already active.

Affected Version(s)

2201.9.0

OS, DB, other environment details and versions

No response

Related area

-> Compilation

Related issue(s) (optional)

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Suggested label(s) (optional)

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Suggested assignee(s) (optional)

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[gayaldassanayake]

1. Hash verification warning was due to not retrieving and passing the hash from the request body. This was fixed with the PR.
2. The delay during the pull command was due to the time it took to hash the complete bala downloaded. This was fixed by adding a buffer of size 1024 (chosen since this is the value we have used for buffering in such similar cases).

[gayaldassanayake]

Need to send a PR to 9.x to be sent to 9.1 patch