fix(query): changed all dockerfile queries for case insensitive support of dockerfile commands

[cx-andre-pereira]

Reason for Proposed Changes

• The changes in fix(analyzer): improvement to dockerfile scanning #7995 will make it so scanned "dockerfiles" account for valid case insensitive syntax, however none of the Dockerfile queries are prepared to handle this, all of them have hardcoded upper case reference to docker commands.

Proposed Changes

• Changed all queries "searchKey" values to properly account for casing.
• Added a new positive/negative sample for every test folder, these are identical to the positive/positive1 and negative/negative1 tests that were already there but now with all lowercase commands.

I submit this contribution under the Apache-2.0 license.