chore: reduce more call to get platform

[zdtsw]

Description

• we have get the Release can derive info from it.
• rename variable to be clear not only version but also name/platform

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[ykaliuta]

removing calls and renaming the variable are two unrelated to each other changes, right?

[zdtsw]

removing calls and renaming the variable are two unrelated to each other changes, right?

removing calls is the init idea
but since it gets the filed Name from variable, the renaming comes into place.
i can keep the variable with old name with following PR, but sounds strange to do a currentOperatorReleaseVersion.Name here

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[ykaliuta]

Basically we can remove GetPlatform API completely