EXHIBIT 1

JOINT FILING AGREEMENT

We, the signatories of the Statement on Schedule 13G to which this Agreement is attached, hereby agree that such statement is, and any amendments thereto filed by any of us will be, filed on behalf of each of us. This Agreement may be executed in two or more counterparts, each of which shall be deemed an original and all of which together shall constitute one instrument. Dated: February 14, 2018

BROOKFIELD ASSET MANAGEMENT, INC.
By:	/s/ A.J. Silber
Name: A.J. Silber
Title: Vice-President, Legal Affairs
PARTNERS LIMITED
By:	/s/ Brian Lawson
Name: Brian Lawson
Title: Director
BROOKFIELD PRIVATE EQUITY, INC.
By:	/s/ A.J. Silber
Name: A.J. Silber
Title: Director
BROOKFIELD US CORPORATION
By:	/s/ Jordan Kolar
Name: Jordan Kolar
Title: Vice-President

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BROOKFIELD PRIVATE EQUITY HOLDINGS LLC
By:	/s/ Jordan Kolar
Name: Jordan Kolar
Title: Senior Vice-President
BROOKFIELD PRIVATE EQUITY DIRECT INVESTMENTS HOLDINGS LP
By:  Brookfield Private Equity, Inc., its general partner:
By:	/s/ A.J. Silber
Name: A.J. Silber
Title: Director
BROOKFIELD CAPITAL PARTNERS LTD.
By:	/s/ A.J. Silber
Name: A.J. Silber
Title: Director
BROOKFIELD HOLDINGS CANADA INC.
By:	/s/ A.J. Silber
Name: A.J. Silber
Title: Vice-President

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BROOKFIELD PRIVATE FUNDS HOLDINGS INC.
By:	/s/ A.J. Silber
Name: A.J. Silber
Title: Director
BROOKFIELD CANADA ADVISER, LP
By:  Brookfield Private Funds Holdings Inc., its general partner:
By:	/s/ A.J. Silber
Name: A.J. Silber
Title: Director
BROOKFIELD ASSET MANAGEMENT PRIVATE INSTITUTIONAL CAPITAL ADVISER (CANADA), L.P.
By:  Brookfield Private Funds Holdings, Inc., its general partner:
By:	/s/ A.J. Silber
Name: A.J. Silber
Title: Director
TITAN CO-INVESTMENT GP, LLC
By:	/s/ Jordan Kolar
Name: Jordan Kolar
Title: Senior Vice-President

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BROOKFIELD PRIVATE EQUITY GROUP HOLDINGS LP
By:  Brookfield Private Equity, Inc., its general partner:
By:	/s/ A.J. Silber
Name: A.J. Silber
Title: Director
BROOKFIELD TITAN HOLDINGS LP
By:  Titan Co-Investment GP, LLC, its general partner:
By:	/s/ Jordan Kolar
Name: Jordan Kolar
Title: Senior Vice-President
TITAN CO-INVESTMENT-AC, L.P.
By:  Titan Co-Investment GP, LLC, its general partner:
By:	/s/ Jordan Kolar
Name: Jordan Kolar
Title: Senior Vice-President
TITAN CO-INVESTMENT-CN, L.P.
By:  Titan Co-Investment GP, LLC, its general partner:
By:	/s/ Jordan Kolar
Name: Jordan Kolar
Title: Senior Vice-President

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TITAN CO-INVESTMENT-DS, L.P.
By:  Titan Co-Investment GP, LLC, its general partner:
By:	/s/ Jordan Kolar
Name: Jordan Kolar
Title: Senior Vice-President
TITAN CO-INVESTMENT-FN, L.P.
By:  Titan Co-Investment GP, LLC, its general partner:
By:	/s/ Jordan Kolar
Name: Jordan Kolar
Title: Senior Vice-President
TITAN CO-INVESTMENT-GLH, L.P.
By:  Titan Co-Investment GP, LLC, its general partner:
By:	/s/ Jordan Kolar
Name: Jordan Kolar
Title: Senior Vice-President
TITAN CO-INVESTMENT-HI, L.P.
By:  Titan Co-Investment GP, LLC, its general partner:
By:	/s/ Jordan Kolar
Name: Jordan Kolar
Title: Senior Vice-President

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TITAN CO-INVESTMENT-ICG, L.P.
By:  Titan Co-Investment GP, LLC, its general partner:
By:	/s/ Jordan Kolar
Name: Jordan Kolar
Title:  Senior Vice-President
TITAN CO-INVESTMENT-LB, L.P.
By:  Titan Co-Investment GP, LLC, its general partner:
By:	/s/ Jordan Kolar
Name: Jordan Kolar
Title: Senior Vice-President
TITAN CO-INVESTMENT-MCG, L.P.
By:  Titan Co-Investment GP, LLC, its general partner:
By:	/s/ Jordan Kolar
Name: Jordan Kolar
Title: Senior Vice-President
TITAN CO-INVESTMENT-MRS, L.P.
By:  Titan Co-Investment GP, LLC, its general partner:
By:	/s/ Jordan Kolar
Name: Jordan Kolar
Title: Senior Vice-President

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TITAN CO-INVESTMENT-RBS, L.P.
By:  Titan Co-Investment GP, LLC, its general partner:
By:	/s/ Jordan Kolar
Name: Jordan Kolar
Title: Senior Vice-President
BCP TITAN AGGREGATOR, L.P.
By:  Titan Co-Investment GP, LLC, its general partner:
By:	/s/ Jordan Kolar
Name: Jordan Kolar
Title: Senior Vice-President
BCP TITAN SUB AGGREGATOR, L.P.
By:  Titan Co-Investment GP, LLC, its general partner:
By:	/s/ Jordan Kolar
Name: Jordan Kolar
Title: Senior Vice-President
LONGHORN CAPITAL GS LP
By:  Longhorn Capital Ltd., its general partner:
By:	/s/ Jordan Kolar
Name: Jordan Kolar
Title: Senior Vice-President

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