The parameter names in signature should be independent of parameter values

[sswaroopgupta]

Expected behavior
The parameter names in signature should be independent of parameter values

Actual behavior
The names generated for the parameter is based on the parameter value

Steps to replicate

• Create a gauge-python project
• Create a step Upload file <file:specs/something.txt>
• Generate the implementation

The implementation has the file path mentioned in the annotation text
@step("Upload file:specs/something.txt")
def upload(file:specs/something.txt):
assert False, "Add implementation code"

Version

Gauge version: 0.9.8.nightly-2018-03-29
Commit Hash: b79de74

Plugins
-------
html-report (4.0.4.nightly-2018-03-28)
python (0.2.6.nightly-2018-03-26)
screenshot (0.0.1)