odsign_e2e_test: re-install APEX on device

It's not efficient to pull the APEX from the device, then push to the
device to install.

This reduces the amount of copy for about 31 MB (ART APEX) *
2 (pull+push) * 4 (classes that calls installTestApex per test class) =
~250MB

Bug: 220918654
Test: atest odsign_e2e_test
Change-Id: I507adc6c11005130225389f7a5cfd2ae2b0950f7
1 file changed