fix: set explicit gas limits

[ralph-pichler]

set explicit gas limits to work around nethermind issues.

This change is 

[zelig]

Reviewed 4 of 4 files at r1.
Reviewable status: all files reviewed, 1 unresolved discussion (waiting on @ralph-pichler)

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pkg/postage/postagecontract/contract.go, line 75 at r1 (raw file):

		Data:     callData,
		GasPrice: sctx.GetGasPrice(ctx),
		GasLimit: 65000,

should this not depend on the chain you use?

[zelig]

Reviewable status: all files reviewed, 1 unresolved discussion (waiting on @ralph-pichler)

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pkg/postage/postagecontract/contract.go, line 75 at r1 (raw file):

Previously, zelig (Viktor Trón) wrote…

should this not depend on the chain you use?

same for all values.

[ralph-pichler]

Reviewable status: all files reviewed, 1 unresolved discussion (waiting on @zelig)

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pkg/postage/postagecontract/contract.go, line 75 at r1 (raw file):

Previously, zelig (Viktor Trón) wrote…

same for all values.

no, the gas usage should be similar on any chain (provided the evm version is the same which seems a reasonable assumption). the primary potential issue is a future hardfork with big gas changes, but there is nothing we can do about that now (except using the estimator which we cannot do on xdai/nethermind).