JOINT FILING AGREEMENT PURSUANT TO RULE 13d-1(k)(1)

Exhibit 99.1

JOINT FILING AGREEMENT

PURSUANT TO RULE 13d-1(k)(1)

The undersigned acknowledge and agree that the foregoing statement on Schedule 13G is filed on behalf of each of the undersigned and that all subsequent amendments to this statement on Schedule 13G shall be filed on behalf of each of the undersigned without the necessity of filing additional joint filing agreements. The undersigned acknowledge that each shall be responsible for the timely filing of such amendments, and for the completeness and accuracy of the information concerning it contained therein, but shall not be responsible for the completeness and accuracy of the information concerning the others, except to the extent that it knows or has reason to believe that such information is inaccurate. This Agreement may be executed in any number of counterparts and all of such counterparts taken together shall constitute one and the same instrument.

Dated: February 14, 2017

[Signature Pages Follow]

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	ONYX GEM INVESTMENT HOLDINGS LIMITED
	By:	/s/ Xxxx X. X’Xxxxx
		Name: Xxxx X. X’Xxxxx
		Title: Director

	ONYX GEM GROUP LIMITED
	By:	/s/ Xxxx X. X’Xxxxx
		Name: Xxxx X. X’Xxxxx
		Title: Director

	ZEBRA CO-INVEST LP
	By:	Cayman Zebra Holdings GP Ltd., its general partner
	By:	/s/ Xxxx X. X’Xxxxx
		Name: Xxxx X. X’Xxxxx
		Title: Director

	WARBURG PINCUS PRIVATE EQUITY XI, L.P.
	By:	Xxxxxxx Xxxxxx XX, L.P., its general partner
	By:	WP Global LLC, its general partner
	By:	Warburg Pincus Partners II, L.P., its managing member
	By:	Warburg Pincus Partners GP LLC, its general partner
	By:	Warburg Pincus & Co., its managing member
	By:	/s/ Xxxxxx X. Xxxxxx
		Name: Xxxxxx X. Xxxxxx
		Title: Partner

2 

	WARBURG PINCUS PRIVATE EQUITY XI-B, L.P.
	By:	Xxxxxxx Xxxxxx XX, L.P., its general partner
	By:	WP Global LLC, its general partner
	By:	Warburg Pincus Partners II, L.P., its managing member
	By:	Warburg Pincus Partners GP LLC, its general partner
	By:	Warburg Pincus & Co., its managing member
	By:	/s/ Xxxxxx X. Xxxxxx
		Name: Xxxxxx X. Xxxxxx
		Title: Partner

	WARBURG PINCUS PRIVATE EQUITY XI-C, L.P.
	By:	Warburg Pincus (Cayman) XI, L.P., its general partner
	By:	Warburg Pincus XI-C, LLC, its general partner
	By:	Warburg Pincus Partners II (Cayman), L.P., its managing member
	By:	Warburg Pincus (Bermuda) Private Equity GP Ltd., its general partner
	By:	/s/ Xxxxxx X. Xxxxxx
		Name: Xxxxxx X. Xxxxxx
		Title: Authorised Signatory

	WP XI Partners, L.P.
	By:	Xxxxxxx Xxxxxx XX, L.P., its general partner
	By:	WP Global LLC, its general partner
	By:	Warburg Pincus Partners II, L.P., its managing member
	By:	Warburg Pincus Partners GP LLC, its general partner
	By:	Warburg Pincus & Co., its managing member
	By:	/s/ Xxxxxx X. Xxxxxx
		Name: Xxxxxx X. Xxxxxx
		Title: Partner

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	WARBURG PINCUS XI PARTNERS, L.P.
	By:	Xxxxxxx Xxxxxx XX, L.P., its general partner
	By:	WP Global LLC, its general partner
	By:	Warburg Pincus Partners II, L.P., its managing member
	By:	Warburg Pincus Partners GP LLC, its general partner
	By:	Warburg Pincus & Co., its managing member
	By:	/s/ Xxxxxx X. Xxxxxx
		Name: Xxxxxx X. Xxxxxx
		Title: Partner

	WARBURG PINCUS LLC
	By:	/s/ Xxxxxx X. Xxxxxx
		Name: Xxxxxx X. Xxxxxx
		Title: Managing Director

	WARBURG PINCUS XI, L.P.
	By:	WP Global LLC, its general partner
	By:	Warburg Pincus Partners II, L.P., its managing member
	By:	Warburg Pincus Partners GP LLC, its general partner
	By:	Warburg Pincus & Co., its managing member
	By:	/s/ Xxxxxx X. Xxxxxx
		Name: Xxxxxx X. Xxxxxx
		Title: Partner

	WP GLOBAL LLC
	By:	Warburg Pincus Partners II, L.P., its managing member
	By:	Warburg Pincus Partners GP LLC, its general partner
	By:	Warburg Pincus & Co., its managing member
	By:	/s/ Xxxxxx X. Xxxxxx
		Name: Xxxxxx X. Xxxxxx
		Title: Partner

	WARBURG PINCUS PARTNERS II, L.P.
	By:	Warburg Pincus Partners GP LLC, its general partner
	By:	Warburg Pincus & Co., its managing member
	By:	/s/ Xxxxxx X. Xxxxxx
		Name: Xxxxxx X. Xxxxxx
		Title: Partner

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	WARBURG PINCUS PARTNERS GP LLC
	By:	Warburg Pincus & Co., its managing member
	By:	/s/ Xxxxxx X. Xxxxxx
		Name: Xxxxxx X. Xxxxxx
		Title: Partner

	WARBURG PINCUS & CO.
	By:	/s/ Xxxxxx X. Xxxxxx
		Name: Xxxxxx X. Xxxxxx
		Title: Partner

	WARBURG PINCUS (CAYMAN) XI, L.P.
	By:	Warburg Pincus XI-C, LLC, its general partner
	By:	Warburg Pincus Partners II (Cayman), L.P., its managing member
	By:	Warburg Pincus (Bermuda) Private Equity GP Ltd., its general partner
	By:	/s/ Xxxxxx X. Xxxxxx
		Name: Xxxxxx X. Xxxxxx
		Title: Authorised Signatory

	WARBURG PINCUS XI-C, LLC
	By:	Warburg Pincus Partners II (Cayman), L.P., its managing member
	By:	Warburg Pincus (Bermuda) Private Equity GP Ltd., its general partner
	By:	/s/ Xxxxxx X. Xxxxxx
		Name: Xxxxxx X. Xxxxxx
		Title: Authorised Signatory

	WARBURG PINCUS (BERMUDA) XI, LTD.
	By:	/s/ Xxxxxx X. Xxxxxx
		Name: Xxxxxx X. Xxxxxx
		Title: Authorised Signatory

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	WARBURG PINCUS PARTNERS II (CAYMAN), L.P.
	By:	Warburg Pincus (Bermuda) Private Equity GP Ltd., its general partner
	By:	/s/ Xxxxxx X. Xxxxxx
		Name: Xxxxxx X. Xxxxxx
		Title: Authorised Signatory

	WARBURG PINCUS (BERMUDA) PRIVATE EQUITY GP LTD.
	By:	/s/ Xxxxxx X. Xxxxxx
		Name: Xxxxxx X. Xxxxxx
		Title: Authorised Signatory

	CAYMAN ZEBRA HOLDINGS GP LTD.
	By:	/s/ Xxxx X. X’Xxxxx s
		Name: Xxxx X. X’Xxxxx
		Title: Director

	XXXXXXX X. XXXX
	By:	/s/ Xxxxxx X. Xxxxxx l
		Xxxxxx X. Xxxxxx, Attorney-in-fact*

	XXXXXX X. XXXXX
	By:	/s/ Xxxxxx X. Xxxxxx
		Xxxxxx X. Xxxxxx, Attorney-in-fact*

* The Power of Attorney given by each of Xx. Xxxx and Xx. Xxxxx was previously filed with the U.S. Securities and Exchange Commission on July 12, 2016 as an exhibit to the statement on Schedule 13D filed by Warburg Pincus LLC with respect to WEX Inc. and is hereby incorporated by reference.

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