Merge pull request microsoft#272 from microsoft/dev

Update 5.1.0.b4

Merge pull request microsoft#262 from microsoft/dev

5.1.0b3

Merge pull request microsoft#260 from microsoft/dev

5.1.0b2

Merge pull request microsoft#243 from microsoft/dev

M153, released 5.1 clients

Merge pull request microsoft#228 from microsoft/dev

Regenerate clients for M153

Merge pull request microsoft#223 from microsoft/dev

Regen 5.1 clients for M152

Merge pull request microsoft#221 from microsoft/dev

5.0.0b7 - fix issue where some headers weren't getting set on request and other minor fixes.

Merge pull request microsoft#216 from microsoft/dev

M151 clients and other minor fixes

Merge pull request microsoft#207 from Microsoft/dev

regen 5.1 from M150

Merge pull request microsoft#200 from Microsoft/dev

M149