Update protobufs to match those in dgo and fix tests.

[martinmr]

• Update protobufs and generated files.
• Update tests to use port 9180 to match the port used by the tests scripts.
• Add script to run tests locally (assumes Dgraph is already installed to prevent "go get" from rewriting local changes.
• Update test documentation in README.

Fixes #32

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This change is 

[CLAassistant]

All committers have signed the CLA.

[coveralls]

Pull Request Test Coverage Report for Build 50

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.5%) to 95.545%

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Totals
Change from base Build 39:	0.5%
Covered Lines:	193
Relevant Lines:	202

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💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 57

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 95.05%

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Totals
Change from base Build 39:	0.0%
Covered Lines:	192
Relevant Lines:	202

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💛 - Coveralls

[danielmai]

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tests/helper.py, line 46 at r3 (raw file):

SERVER_ADDR = 'localhost:9080'

You should be able to simply change this one line and the rest of the tests will pick it the correct Dgraph Alpha address from here.

[danielmai]

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tests/helper.py, line 76 at r3 (raw file):

    def setUp(self):
        """Sets up the client and verifies the version is compatible."""

Update docstring since it's no longer doing version checking.

[danielmai]

Reviewed 2 of 3 files at r1, 2 of 5 files at r2, 2 of 2 files at r3.
Reviewable status: 6 of 9 files reviewed, 2 unresolved discussions (waiting on @martinmr and @danielmai)

[danielmai]

Made some comments.

Reviewed 3 of 5 files at r2.
Reviewable status: 7 of 9 files reviewed, 2 unresolved discussions (waiting on @danielmai and @martinmr)

[martinmr]

Reviewable status: 7 of 9 files reviewed, 2 unresolved discussions (waiting on @danielmai)

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tests/helper.py, line 46 at r3 (raw file):

Previously, danielmai (Daniel Mai) wrote…

You should be able to simply change this one line and the rest of the tests will pick it the correct Dgraph Alpha address from here.

Done.

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tests/helper.py, line 76 at r3 (raw file):

Previously, danielmai (Daniel Mai) wrote…

Update docstring since it's no longer doing version checking.

Done.

[danielmai]

Reviewed 2 of 2 files at r4.
Reviewable status: complete! all files reviewed, all discussions resolved